diff --git a/__test__/dxf/__snapshots__/dxf_conf.test.ts.snap b/__test__/dxf/__snapshots__/dxf_conf.test.ts.snap
new file mode 100644
index 000000000..a9c5f636e
--- /dev/null
+++ b/__test__/dxf/__snapshots__/dxf_conf.test.ts.snap
@@ -0,0 +1,718 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`测试坐标系 1`] = `
+Arc {
+  "center": Vector3 {
+    "x": 338.1033990288489,
+    "y": 492.6878034847188,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 160.20836543733196,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": 1,
+  },
+  "handle": "1A",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 144.5876021646271,
+  "startAngle": 46.27267439304247,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 2`] = `
+Arc {
+  "center": Vector3 {
+    "x": 648.7300771208227,
+    "y": 598.858611825193,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 317.8005977801438,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": 1,
+  },
+  "handle": "1B",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 163.24762182347456,
+  "startAngle": 161.8857480659139,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 3`] = `
+Circle {
+  "center": Vector3 {
+    "x": 914.6529562982004,
+    "y": 557.0694087403599,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": 1,
+  },
+  "handle": "1C",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 89.93756136008184,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "CIRCLE",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 4`] = `
+Arc {
+  "center": Vector3 {
+    "x": 1256.44200267555,
+    "y": 617.6363902431158,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 28.245069504082206,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": 1,
+  },
+  "handle": "1D",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 142.53451443264086,
+  "startAngle": 200.43711036930276,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 5`] = `
+Arc {
+  "center": Vector3 {
+    "x": 795.2400732792385,
+    "y": -6.9392893298059395,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 198.9879636567884,
+  "extrusion": Vector3 {
+    "x": 1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "1E",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 58.39946353294328,
+  "startAngle": 50.067979655488315,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 6`] = `
+Arc {
+  "center": Vector3 {
+    "x": 951.3713621924406,
+    "y": -0.9326463427875904,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 345.2274499653736,
+  "extrusion": Vector3 {
+    "x": 1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "1F",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 39.9043399032529,
+  "startAngle": 155.53679121838985,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 7`] = `
+Circle {
+  "center": Vector3 {
+    "x": 1034.456106670302,
+    "y": 14.108779918888196,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "extrusion": Vector3 {
+    "x": 1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "20",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 33.56356155376025,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "CIRCLE",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 8`] = `
+Arc {
+  "center": Vector3 {
+    "x": 1154.1481089549789,
+    "y": 4.455713584499371,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 43.731022826758426,
+  "extrusion": Vector3 {
+    "x": 1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "21",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 59.076480267941186,
+  "startAngle": 222.84956668122754,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 9`] = `
+Arc {
+  "center": Vector3 {
+    "x": -184.66013131769495,
+    "y": 17.951029809255434,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 210.12391886438738,
+  "extrusion": Vector3 {
+    "x": -1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "22",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 97.55455259794002,
+  "startAngle": 23.901411831489693,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 10`] = `
+Arc {
+  "center": Vector3 {
+    "x": 86.21760512433669,
+    "y": 18.9606628121278,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 18.936975689477336,
+  "extrusion": Vector3 {
+    "x": -1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "23",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 102.9527459180477,
+  "startAngle": 188.90494504036414,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 11`] = `
+Circle {
+  "center": Vector3 {
+    "x": 321.43131467838316,
+    "y": 26.847041445506477,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "extrusion": Vector3 {
+    "x": -1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "24",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 90.24330181115464,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "CIRCLE",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 12`] = `
+Arc {
+  "center": Vector3 {
+    "x": 575.1018676562114,
+    "y": 61.32538817942155,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 359.7917118699017,
+  "extrusion": Vector3 {
+    "x": -1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "25",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 113.87762124244482,
+  "startAngle": 210.50369477008587,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 13`] = `
+Arc {
+  "center": Vector3 {
+    "x": 1844.0366210068821,
+    "y": 31.209982632468424,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 200.60092775926054,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": -1,
+    "z": 0,
+  },
+  "handle": "26",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 204.75902790831123,
+  "startAngle": 17.586056241710665,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 14`] = `
+Arc {
+  "center": Vector3 {
+    "x": 2343.3282424658646,
+    "y": 49.00817526124687,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 347.95239438854355,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": -1,
+    "z": 0,
+  },
+  "handle": "27",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 188.07259850706058,
+  "startAngle": 165.51464391828904,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 15`] = `
+Arc {
+  "center": Vector3 {
+    "x": 1815.0486048102593,
+    "y": 1122.208755124013,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 321.4670826858946,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": -1,
+    "z": 0,
+  },
+  "handle": "28",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 1503.9120300934628,
+  "startAngle": 303.82632358188886,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 16`] = `
+Circle {
+  "center": Vector3 {
+    "x": 3295.016696810837,
+    "y": 96.05125433636663,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": -1,
+    "z": 0,
+  },
+  "handle": "29",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 154.74197208563115,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "CIRCLE",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 17`] = `
+Arc {
+  "center": Vector3 {
+    "x": 1561.8221972145354,
+    "y": -220.6722975607595,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 179.9316687509269,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": -1,
+  },
+  "handle": "2A",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 384.3210739793441,
+  "startAngle": 24.74650580572556,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 18`] = `
+Arc {
+  "center": Vector3 {
+    "x": 3011.5016221510377,
+    "y": 965.5818818826049,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 271.5409362138016,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": -1,
+  },
+  "handle": "2B",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 1255.001170786365,
+  "startAngle": 228.8613110771485,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 19`] = `
+Arc {
+  "center": Vector3 {
+    "x": 3521.0162557338467,
+    "y": -266.7937654912005,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 149.0341063230569,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": -1,
+  },
+  "handle": "2C",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 336.1536343583566,
+  "startAngle": 357.10659325887775,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 20`] = `
+Circle {
+  "center": Vector3 {
+    "x": 4114.56483206322,
+    "y": -150.54578294871257,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": -1,
+  },
+  "handle": "2D",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 219.60046528660857,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "CIRCLE",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 21`] = `
+Arc {
+  "center": Vector3 {
+    "x": 4880.082219915602,
+    "y": 124.870849021293,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 224.63171264195998,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 1,
+    "z": 0,
+  },
+  "handle": "2E",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 295.6896229418994,
+  "startAngle": 19.02318051138638,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 22`] = `
+Arc {
+  "center": Vector3 {
+    "x": 5734.190885975135,
+    "y": 81.99061658853293,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 2.577865493882651,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 1,
+    "z": 0,
+  },
+  "handle": "2F",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 278.9292771505529,
+  "startAngle": 179.15823740560845,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 23`] = `
+Arc {
+  "center": Vector3 {
+    "x": 5058.101141116243,
+    "y": 6177.514250335131,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 288.4409367394779,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 1,
+    "z": 0,
+  },
+  "handle": "30",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 6399.624650282583,
+  "startAngle": 280.7273347683135,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 24`] = `
+Circle {
+  "center": Vector3 {
+    "x": 7533.418387972919,
+    "y": 52.297688997727974,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 1,
+    "z": 0,
+  },
+  "handle": "31",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 309.9270199451834,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "CIRCLE",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 25`] = `
+Arc {
+  "center": Vector3 {
+    "x": -11346.356532853759,
+    "y": 8663.3752221401,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 339.00388038479855,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 1,
+    "z": 0,
+  },
+  "handle": "32",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 21732.3973224181,
+  "startAngle": 334.8258522695763,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 26`] = `
+Arc {
+  "center": Vector3 {
+    "x": 4718.237530820744,
+    "y": -373.98872943584104,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 169.33321741664236,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": 1,
+  },
+  "handle": "33",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 657.9985770384598,
+  "startAngle": 51.6595156726647,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
+
+exports[`测试坐标系 27`] = `
+Arc {
+  "center": Vector3 {
+    "x": 496778.2368548376,
+    "y": -490804.22982603795,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endAngle": 135.11459152082898,
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": 1,
+  },
+  "handle": "34",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "radius": 694351.7268222995,
+  "startAngle": 134.885408479171,
+  "subclassMarker": "AcDbCircle",
+  "trueColor": undefined,
+  "type": "ARC",
+  "visible": undefined,
+}
+`;
diff --git a/__test__/dxf/__snapshots__/dxf_el.test.ts.snap b/__test__/dxf/__snapshots__/dxf_el.test.ts.snap
new file mode 100644
index 000000000..5920273a2
--- /dev/null
+++ b/__test__/dxf/__snapshots__/dxf_el.test.ts.snap
@@ -0,0 +1,833 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`任意轴坐标系椭圆 1`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 337.7892030848327,
+    "y": 0,
+    "z": 558.6118251930241,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 1.4405998558833164e-14,
+    "y": 0,
+    "z": 235.26781058609194,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": -1,
+    "z": 0,
+  },
+  "handle": "1A",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.7670523412708661,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 2`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 971.2021372138901,
+    "y": 9.979027876158327,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 275.9734486574838,
+    "y": 23.17334301704065,
+    "z": 0,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": 1,
+  },
+  "handle": "1B",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.6161522212677439,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 3`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 0,
+    "y": 376.2787636521916,
+    "z": 553.5769614228184,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 0,
+    "y": 2.510042659685116e-14,
+    "z": -409.9210746204874,
+  },
+  "extrusion": Vector3 {
+    "x": 1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "1C",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.401639344262295,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 4`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 0,
+    "y": -418.67323531214146,
+    "z": 679.4023475206053,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 0,
+    "y": -248.01477883417138,
+    "z": 0,
+  },
+  "extrusion": Vector3 {
+    "x": -1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "1D",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.7751306897594087,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 5`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": -722.7831100972741,
+    "y": 34.28543499417401,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": -1.5022200263096847e-14,
+    "y": -245.33114810826905,
+    "z": 0,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": -1,
+  },
+  "handle": "1E",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.5416666666666666,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 6`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": -919.2452469445237,
+    "y": 0,
+    "z": 575.1871269736582,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": -95.85067346221922,
+    "y": 0,
+    "z": -95.8506734622192,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 1,
+    "z": 0,
+  },
+  "handle": "1F",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.49497474683058007,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 7`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 2881.606171887065,
+    "y": 0,
+    "z": 765.5826058907224,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 3.540091155142779e-14,
+    "y": 0,
+    "z": -578.140759867666,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": -1,
+    "z": 0,
+  },
+  "handle": "20",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.6885245901639341,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 8`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 4383.718724957772,
+    "y": 0,
+    "z": 844.4497602985355,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": -426.44462463359486,
+    "y": 0,
+    "z": -426.44462463345724,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": -1,
+    "z": 0,
+  },
+  "handle": "21",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.7543403674554563,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 9`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 6149.580932239946,
+    "y": 83.56987103451945,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 4.1822165799927475e-14,
+    "y": -683.0077999476371,
+    "z": 0,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": 1,
+  },
+  "handle": "22",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.4659548315532864,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 10`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 7216.19585270612,
+    "y": -66.13046868003096,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 645.5827150189998,
+    "y": -93.56271232159429,
+    "z": 0,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": 1,
+  },
+  "handle": "23",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.32454294289918767,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 11`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 8709.485094419037,
+    "y": 403.402459189384,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 422.7808171726939,
+    "y": -200.26459760807333,
+    "z": 0,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": 1,
+  },
+  "handle": "24",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.5946427498927404,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 12`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 0,
+    "y": 1495.2977034058104,
+    "z": 726.4288182666232,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 0,
+    "y": 2.446907750249149e-14,
+    "z": -399.6103614450765,
+  },
+  "extrusion": Vector3 {
+    "x": 1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "25",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.5452389638064711,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 13`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 0,
+    "y": 2509.463837080227,
+    "z": 561.0221982778894,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 0,
+    "y": 170.22120265677353,
+    "z": 170.2212026567464,
+  },
+  "extrusion": Vector3 {
+    "x": 1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "26",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.4240000000000008,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 14`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 0,
+    "y": 3221.3069695705594,
+    "z": 610.5992739202115,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 0,
+    "y": -219.77641229869542,
+    "z": -36.13773222361086,
+  },
+  "extrusion": Vector3 {
+    "x": 1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "27",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.9015135457999485,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 15`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 0,
+    "y": -2723.1925840252115,
+    "z": 693.593787999137,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 0,
+    "y": -271.1615781729098,
+    "z": -665.5784191516864,
+  },
+  "extrusion": Vector3 {
+    "x": -1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "28",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.6790997501017327,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 16`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 0,
+    "y": -4510.393894710296,
+    "z": 1396.1487859925833,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 0,
+    "y": -6.792487338297232e-14,
+    "z": -1109.2973652528103,
+  },
+  "extrusion": Vector3 {
+    "x": -1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "29",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.41290898169026763,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 17`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 0,
+    "y": -6777.627322824062,
+    "z": 1001.2810781689377,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 0,
+    "y": -875.4594949976998,
+    "z": 875.4594949974189,
+  },
+  "extrusion": Vector3 {
+    "x": -1,
+    "y": 0,
+    "z": 0,
+  },
+  "handle": "2A",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.5574968834215821,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 18`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": -9289.971667863443,
+    "y": 23.107584966108334,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": -786.4355366765559,
+    "y": -2801.6765994102425,
+    "z": 0,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": -1,
+  },
+  "handle": "2B",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.4391666339583543,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 19`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": -17722.52670987782,
+    "y": -5399.365440418747,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": -1.7081238850234282e-13,
+    "y": 2789.578001122757,
+    "z": 0,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": -1,
+  },
+  "handle": "2C",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.6871779960544495,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 20`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": -23357.383671828775,
+    "y": -1064.7201708014763,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": -2085.352128566476,
+    "y": -3058.516455222906,
+    "z": 0,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": -1,
+  },
+  "handle": "2D",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.3567799889397346,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 21`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": -32145.254657867412,
+    "y": 0,
+    "z": 1725.386311696919,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": -1001.4528225657303,
+    "y": 0,
+    "z": -3543.6022952325666,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 1,
+    "z": 0,
+  },
+  "handle": "2E",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.6212854606633754,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 22`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": -38539.145755787045,
+    "y": 0,
+    "z": 1879.4559767070298,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": -3620.637127737617,
+    "y": 0,
+    "z": -1540.696650101115,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 1,
+    "z": 0,
+  },
+  "handle": "2F",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.3322455740903174,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 23`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": -48884.69243769194,
+    "y": 0,
+    "z": 2324.1640588586815,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": -1833.4332286094595,
+    "y": 0,
+    "z": 6906.789198131889,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 1,
+    "z": 0,
+  },
+  "handle": "30",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.5282270566323839,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 24`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 20865.625435287715,
+    "y": -9648.578071219148,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 6109.921296799555,
+    "y": 0,
+    "z": 0,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": 1,
+  },
+  "handle": "31",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.8301886788654536,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`任意轴坐标系椭圆 25`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 33318.935082427575,
+    "y": -17029.50021392631,
+    "z": 0,
+  },
+  "colorNumber": 7,
+  "endParameter": 6.283185307179586,
+  "endPointOfMajorAxis": Vector3 {
+    "x": 5648.795158756198,
+    "y": 0,
+    "z": 0,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": 1,
+  },
+  "handle": "32",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.8172028554313208,
+  "startParameter": 0,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
+
+exports[`测试椭圆导出 1`] = `
+Ellipse {
+  "center": Vector3 {
+    "x": 1125.3161763730257,
+    "y": 534.314974743387,
+    "z": 0,
+  },
+  "colorNumber": 8,
+  "endParameter": 0.9625506967082142,
+  "endPointOfMajorAxis": Vector3 {
+    "x": -17.49999999993635,
+    "y": 1.6708856520547834e-12,
+    "z": 0,
+  },
+  "extrusion": Vector3 {
+    "x": 0,
+    "y": 0,
+    "z": -1,
+  },
+  "handle": "1A",
+  "layerName": undefined,
+  "lineType": undefined,
+  "lineTypeScale": undefined,
+  "ratioOfMinorAxisToMajorAxis": 0.827936422528518,
+  "startParameter": 2.1790418545093813,
+  "subclassMarker": "AcDbEllipse",
+  "trueColor": undefined,
+  "type": "ELLIPSE",
+  "visible": undefined,
+}
+`;
diff --git a/__test__/dxf/dxf_conf.test.ts b/__test__/dxf/dxf_conf.test.ts
new file mode 100644
index 000000000..c48338845
--- /dev/null
+++ b/__test__/dxf/dxf_conf.test.ts
@@ -0,0 +1,16 @@
+import { DxfWriter } from "dxf-write";
+import { Conver2DxfEntity } from "../../src/Add-on/ACAD/Entity2DxfEntity";
+import { Entity } from "../../src/DatabaseServices/Entity/Entity";
+import { LoadEntityFromFileData } from "../Utils/LoadEntity.util";
+
+test('测试坐标系', () =>
+{
+    let d = { "file": [27, "Arc", 10, 2, 109, 0, 1, 7, 71, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 338.1033990288489, 492.6878034847188, 0, 1], 0, 0, 1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 338.1033990288489, 492.6878034847188, 0, 1], 0, 0, 1, 2, 144.5876021646271, 2.7961634661197277, 0.8076105218618599, 1, "Arc", 10, 2, 110, 0, 1, 7, 71, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 648.7300771208227, 598.858611825193, 0, 1], 0, 0, 1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 648.7300771208227, 598.858611825193, 0, 1], 0, 0, 1, 2, 163.24762182347456, 2.8254393158042395, 5.546666796069691, 0, "Circle", 10, 2, 111, 0, 1, 7, 71, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 914.6529562982004, 557.0694087403599, 0, 1], 0, 0, 1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1], 0, 0, 1, 1, 89.93756136008184, "Arc", 10, 2, 112, 0, 1, 7, 71, [-1, 1.2246467991473532e-16, 0, 0, -1.2246467991473532e-16, -1, 0, 0, 0, 0, 1, 0, 1256.44200267555, 617.6363902431158, 0, 1], 0, 0, 1, [-1, 1.2246467991473532e-16, 0, 0, -1.2246467991473532e-16, -1, 0, 0, 0, 0, 1, 0, 1256.44200267555, 617.6363902431158, 0, 1], 0, 0, 1, 2, 142.53451443264086, 3.63456211389067, 0.3566948655378077, 1, "Arc", 10, 2, 113, 0, 1, 7, 71, [0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 795.2400732792385, -6.9392893298059395, 1], 0, 0, 1, [0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 795.2400732792385, -6.9392893298059395, 1], 0, 0, 1, 2, 58.39946353294328, 3.4729951376497734, 0.873851094809807, 1, "Arc", 10, 2, 114, 0, 1, 7, 71, [0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 951.3713621924406, -0.9326463427875904, 1], 0, 0, 1, [0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 951.3713621924406, -0.9326463427875904, 1], 0, 0, 1, 2, 39.9043399032529, 2.714629114747905, 6.025355670159753, 0, "Circle", 10, 2, 115, 0, 1, 7, 71, [0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1034.456106670302, 14.108779918888196, 1], 0, 0, 1, [0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 33.56356155376025, "Arc", 10, 2, 116, 0, 1, 7, 71, [0, -0.833574237981688, -0.5524074490566255, 0, 0, 0.5524074490566255, -0.833574237981688, 0, 1, 0, 0, 0, 0, 1154.1481089549789, 4.455713584499371, 1], 0, 0, 1, [0, -0.833574237981688, -0.5524074490566255, 0, 0, 0.5524074490566255, -0.833574237981688, 0, 1, 0, 0, 0, 0, 1154.1481089549789, 4.455713584499371, 1], 0, 0, 1, 2, 59.076480267941186, 3.3195933999062754, 0.1626164343650294, 1, "Arc", 10, 2, 117, 0, 1, 7, 71, [0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, 184.66013131769495, 17.951029809255434, 1], 0, 0, 1, [0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, 184.66013131769495, 17.951029809255434, 1], 0, 0, 1, 2, 97.55455259794002, 3.6673542213769843, 0.4171583323346232, 1, "Arc", 10, 2, 118, 0, 1, 7, 71, [0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, -86.21760512433669, 18.9606628121278, 1], 0, 0, 1, [0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, -86.21760512433669, 18.9606628121278, 1], 0, 0, 1, 2, 102.9527459180477, 3.297013264253287, 0.3305125761515028, 0, "Circle", 10, 2, 119, 0, 1, 7, 71, [0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, -321.43131467838316, 26.847041445506477, 1], 0, 0, 1, [0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 90.24330181115464, "Arc", 10, 2, 120, 0, 1, 7, 71, [0, 0.9963712454524817, -0.08511369593356015, 0, 0, -0.08511369593356015, -0.9963712454524817, 0, -1, 0, 0, 0, 0, -575.1018676562114, 61.32538817942155, 1], 0, 0, 1, [0, 0.9963712454524817, -0.08511369593356015, 0, 0, -0.08511369593356015, -0.9963712454524817, 0, -1, 0, 0, 0, 0, -575.1018676562114, 61.32538817942155, 1], 0, 0, 1, 2, 113.87762124244482, 3.0527405420880034, 0.44717310992262105, 1, "Arc", 10, 2, 121, 0, 1, 7, 71, [1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 1844.0366210068821, 0, 31.209982632468424, 1], 0, 0, 1, [1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 1844.0366210068821, 0, 31.209982632468424, 1], 0, 0, 1, 2, 204.75902790831123, 3.5011466719543876, 0.30693458385875083, 1, "Arc", 10, 2, 122, 0, 1, 7, 71, [1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 2343.3282424658646, 0, 49.00817526124687, 1], 0, 0, 1, [1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 2343.3282424658646, 0, 49.00817526124687, 1], 0, 0, 1, 2, 188.07259850706058, 2.888775496640152, 6.072914922277927, 0, "Arc", 10, 2, 123, 0, 1, 7, 71, [-1, 0, 1.2246467991473532e-16, 0, -1.2246467991473532e-16, 0, -1, 0, 0, -1, 0, 0, 1815.0486048102593, 0, 1122.208755124013, 1], 0, 0, 1, [-1, 0, 1.2246467991473532e-16, 0, -1.2246467991473532e-16, 0, -1, 0, 0, -1, 0, 0, 1815.0486048102593, 0, 1122.208755124013, 1], 0, 0, 1, 2, 1503.9120300934628, 2.469066376059924, 2.1611770471438585, 1, "Circle", 10, 2, 125, 0, 1, 7, 71, [1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 3295.016696810837, 0, 96.05125433636663, 1], 0, 0, 1, [1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 154.74197208563115, "Arc", 10, 2, 126, 0, 1, 7, 71, [-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, -1561.8221972145354, -220.6722975607595, 0, 1], 0, 0, 1, [-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, -1561.8221972145354, -220.6722975607595, 0, 1], 0, 0, 1, 2, 384.3210739793441, 3.140400048311467, 0.431908004673803, 1, "Arc", 10, 2, 127, 0, 1, 7, 71, [-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, -3011.5016221510377, 965.5818818826049, 0, 1], 0, 0, 1, [-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, -3011.5016221510377, 965.5818818826049, 0, 1], 0, 0, 1, 2, 1255.001170786365, 3.994383408727212, 4.739283390878743, 0, "Arc", 10, 2, 128, 0, 1, 7, 71, [0.02626939476397753, 0.9996548999023285, 0, 0, 0.9996548999023285, -0.02626939476397753, 0, 0, 0, 0, -1, 0, -3521.0162557338467, -266.7937654912005, 0, 1], 0, 0, 1, [0.02626939476397753, 0.9996548999023285, 0, 0, 0.9996548999023285, -0.02626939476397753, 0, 0, 0, 0, -1, 0, -3521.0162557338467, -266.7937654912005, 0, 1], 0, 0, 1, 2, 336.1536343583566, 4.635617089114631, 1.00406710927167, 0, "Circle", 10, 2, 129, 0, 1, 7, 71, [-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, -4114.56483206322, -150.54578294871257, 0, 1], 0, 0, 1, [-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1], 0, 0, 1, 1, 219.60046528660857, "Arc", 10, 2, 130, 0, 1, 7, 71, [-1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, -4880.082219915602, 0, 124.870849021293, 1], 0, 0, 1, [-1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, -4880.082219915602, 0, 124.870849021293, 1], 0, 0, 1, 2, 295.6896229418994, 3.9205629899959717, 0.332017134124911, 1, "Arc", 10, 2, 131, 0, 1, 7, 71, [-1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, -5734.190885975135, 0, 81.99061658853293, 1], 0, 0, 1, [-1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, -5734.190885975135, 0, 81.99061658853293, 1], 0, 0, 1, 2, 278.9292771505529, 3.126901124797531, 0.044992240541802, 0, "Arc", 10, 2, 132, 0, 1, 7, 71, [0.8827023114834084, 0, 0.4699325795280084, 0, 0.4699325795280084, 0, -0.8827023114834084, 0, 0, 1, 0, 0, -5058.101141116243, 0, 6177.514250335131, 1], 0, 0, 1, [0.8827023114834084, 0, 0.4699325795280084, 0, 0.4699325795280084, 0, -0.8827023114834084, 0, 0, 1, 0, 0, -5058.101141116243, 0, 6177.514250335131, 1], 0, 0, 1, 2, 6399.624650282583, 2.381865786886328, 2.247238035301184, 1, "Circle", 10, 2, 133, 0, 1, 7, 71, [-1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, -7533.418387972919, 0, 52.297688997727974, 1], 0, 0, 1, [-1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 309.9270199451834, "Arc", 10, 2, 134, 0, 1, 7, 71, [0.7071067811866032, 0, -0.7071067811864918, 0, -0.7071067811864918, 0, -0.7071067811866032, 0, 0, 1, 0, 0, 11346.356532853759, 0, 8663.3752221401, 1], 0, 0, 1, [0.7071067811866032, 0, -0.7071067811864918, 0, -0.7071067811864918, 0, -0.7071067811866032, 0, 0, 1, 0, 0, 11346.356532853759, 0, 8663.3752221401, 1], 0, 0, 1, 2, 21732.3973224181, 1.9897430727645926, 1.9168227259130712, 1, "Arc", 10, 2, 135, 0, 1, 7, 71, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 4718.237530820744, -373.98872943584104, 0, 1], 0, 0, 1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 4718.237530820744, -373.98872943584104, 0, 1], 0, 0, 1, 2, 657.9985770384598, 2.9554221769158158, 0.9016286384736121, 1, "Arc", 10, 2, 136, 0, 1, 7, 71, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 496778.2368548376, -490804.22982603795, 0, 1], 0, 0, 1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 496778.2368548376, -490804.22982603795, 0, 1], 0, 0, 1, 2, 694351.7268222995, 2.354194490859011, 2.3581944895256783, 0], "basePt": { "x": -8943.111640993167, "y": -806.3578692163574, "z": -580.9560058237603 }, "ucs": [1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 0, 0, 0, 1] };
+    let els = LoadEntityFromFileData(d.file) as Entity[];
+    let dxf = new DxfWriter();
+    for (let el of els)
+    {
+        let dxfel = Conver2DxfEntity(el, dxf);
+        expect(dxfel).toMatchSnapshot();
+    }
+});
diff --git a/__test__/dxf/dxf_el.test.ts b/__test__/dxf/dxf_el.test.ts
new file mode 100644
index 000000000..cc6d3d940
--- /dev/null
+++ b/__test__/dxf/dxf_el.test.ts
@@ -0,0 +1,31 @@
+import { DxfWriter } from "dxf-write";
+import { Conver2DxfEntity } from "../../src/Add-on/ACAD/Entity2DxfEntity";
+import { Ellipse } from "../../src/DatabaseServices/Entity/Ellipse";
+import { LoadEntityFromFileData } from "../Utils/LoadEntity.util";
+
+
+test('测试椭圆导出', () =>
+{
+    let d =
+        { "file": [1, "Ellipse", 10, 2, 100, 0, 1, 8, 0, [1, -1.224646799147353e-16, 0, 0, -1.224646799147353e-16, -1, 0, 0, 0, 0, -1, 0, 1125.3161763730257, 534.314974743387, 0, 1], 0, 0, 1, [1, -1.224646799147353e-16, 0, 0, -1.224646799147353e-16, -1, 0, 0, 0, 0, -1, 0, 697086.744540745, -757821.0258150058, 0, 1], 0, 0, 1, 1, 17.49999999993635, 14.488887394196366, 3.1415926535898886, 2.179041854509288, 7.245736003887706], "basePt": { "x": 1107.8260869565217, "y": 519.8260869565217, "z": 0 }, "ucs": [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1] };
+
+    let el = LoadEntityFromFileData(d.file)[0] as Ellipse;
+
+    let dxf = new DxfWriter();
+    let dxfel = Conver2DxfEntity(el, dxf);
+
+    expect(dxfel).toMatchSnapshot();
+});
+
+test('任意轴坐标系椭圆', () =>
+{
+    let d =
+        { "file": [25, "Ellipse", 10, 2, 100, 0, 1, 7, 71, [1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 337.7892030848327, 0, 558.6118251930241, 1], 0, 0, 1, [1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 180.46272493573247, 235.26781058609194, 0, 0, 6.283185307179586, "Ellipse", 10, 2, 101, 0, 1, 7, 71, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 971.2021372138901, 9.979027876158327, 0, 1], 0, 0, 1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 202.24008451235454, 0, 0, 1], 0, 0, 1, 1, 276.94466629724116, 170.64007130729925, 0.08377294374376669, 0, 6.283185307179586, "Ellipse", 10, 2, 102, 0, 1, 7, 71, [0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 376.2787636521916, 553.5769614228184, 1], 0, 0, 1, [0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 409.9210746204874, 164.64043160986785, -1.5707963267948966, 0, 6.283185307179586, "Ellipse", 10, 2, 103, 0, 1, 7, 71, [0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, -418.67323531214146, 679.4023475206053, 1], 0, 0, 1, [0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 192.24386658825847, 248.01477883417138, -1.5707963267948966, 0, 6.283185307179586, "Ellipse", 10, 2, 104, 0, 1, 7, 71, [-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, -722.7831100972741, 34.28543499417401, 0, 1], 0, 0, 1, [-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1], 0, 0, 1, 1, 245.33114810826905, 132.8877052253124, -1.5707963267948966, 0, 6.283185307179586, "Ellipse", 10, 2, 105, 0, 1, 7, 71, [-1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, -919.2452469445237, 0, 575.1871269736582, 1], 0, 0, 1, [-1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 135.55332237286532, 67.09547142355302, -0.7853981633974483, 0, 6.283185307179586, "Ellipse", 10, 2, 106, 0, 1, 7, 71, [1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 2881.606171887065, 0, 765.5826058907224, 1], 0, 0, 1, [1, 0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 578.140759867666, 398.06412974495015, -1.5707963267948966, 0, 6.283185307179586, "Ellipse", 10, 2, 107, 0, 1, 7, 71, [-0.7071067811866616, 0, -0.7071067811864334, 0, 0.7071067811864334, 0, -0.7071067811866616, 0, 0, -1, 0, 0, 4383.718724957772, 0, 844.4497602985355, 1], 0, 0, 1, [-0.7071067811866616, 0, -0.7071067811864334, 0, 0.7071067811864334, 0, -0.7071067811866616, 0, 0, -1, 0, 0, 6831.623005709384, 0, 4428.665411224347, 1], 0, 0, 1, 1, 454.9304339942287, 603.0837717578362, -1.5707963267948966, 0, 6.283185307179586, "Ellipse", 10, 2, 108, 0, 1, 7, 71, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 6149.580932239946, 83.56987103451945, 0, 1], 0, 0, 1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1], 0, 0, 1, 1, 683.0077999476371, 318.25078437418193, -1.5707963267948966, 0, 6.283185307179586, "Ellipse", 10, 2, 109, 0, 1, 7, 71, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 7216.19585270612, -66.13046868003096, 0, 1], 0, 0, 1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1], 0, 0, 1, 1, 652.3273894819047, 211.70825071620195, -0.14392544938821647, 0, 6.283185307179586, "Ellipse", 10, 2, 110, 0, 1, 7, 71, [0.7071067811866076, -0.7071067811864874, 0, 0, 0.7071067811864874, 0.7071067811866076, 0, 0, 0, 0, 1, 0, 8709.485094419037, 403.402459189384, 0, 1], 0, 0, 1, [0.7071067811866076, -0.7071067811864874, 0, 0, 0.7071067811864874, 0.7071067811866076, 0, 0, 0, 0, 1, 0, 2681.09059871903, 6565.014857591026, 0, 1], 0, 0, 1, 1, 278.18194271168045, 467.8135616079704, -1.2277723863741916, 0, 6.283185307179586, "Ellipse", 10, 2, 111, 0, 1, 7, 71, [0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1495.2977034058104, 726.4288182666232, 1], 0, 0, 1, [0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 399.6103614450765, 217.88313940064288, -1.5707963267948966, 0, 6.283185307179586, "Ellipse", 10, 2, 112, 0, 1, 7, 71, [0, 0.7071067811866039, 0.7071067811864912, 0, 0, -0.7071067811864912, 0.7071067811866039, 0, 1, 0, 0, 0, 0, 2509.463837080227, 561.0221982778894, 1], 0, 0, 1, [0, 0.7071067811866039, 0.7071067811864912, 0, 0, -0.7071067811864912, 0.7071067811866039, 0, 1, 0, 0, 0, 0, 1301.9287441934268, -1680.6472296062252, 1], 0, 0, 1, 1, 240.72913340064906, 102.0691525618754, 0, 0, 6.283185307179586, "Ellipse", 10, 2, 113, 0, 1, 7, 71, [0, -0.9863939238321437, 0.16439898730535749, 0, 0, -0.16439898730535749, -0.9863939238321437, 0, 1, 0, 0, 0, 0, 3221.3069695705594, 610.5992739202115, 1], 0, 0, 1, [0, -0.9863939238321437, 0.16439898730535749, 0, 0, -0.16439898730535749, -0.9863939238321437, 0, 1, 0, 0, 0, 0, 6426.8865759723085, 848.7091203105597, 1], 0, 0, 1, 1, 200.7919955606939, 222.7276522867144, -1.2426764317795915, 0, 6.283185307179586, "Ellipse", 10, 2, 114, 0, 1, 7, 71, [0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, -2723.1925840252115, 693.593787999137, 1], 0, 0, 1, [0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 718.6955082075308, 488.065940022972, -1.1839206090638679, 0, 6.283185307179586, "Ellipse", 10, 2, 115, 0, 1, 7, 71, [0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, -4510.393894710296, 1396.1487859925833, 1], 0, 0, 1, [0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 1109.2973652528103, 458.0388454782348, -1.5707963267948966, 0, 6.283185307179586, "Ellipse", 10, 2, 117, 0, 1, 7, 71, [0, -0.707106781186661, 0.7071067811864341, 0, 0, 0.7071067811864341, 0.707106781186661, 0, -1, 0, 0, 0, 0, -6777.627322824062, 1001.2810781689377, 1], 0, 0, 1, [0, -0.707106781186661, 0.7071067811864341, 0, 0, 0.7071067811864341, 0.707106781186661, 0, -1, 0, 0, 0, 0, -1673.2742376779415, -5502.303983046832, 1], 0, 0, 1, 1, 690.2294717128598, 1238.0866911338492, -1.5707963267948966, 0, 6.283185307179586, "Ellipse", 10, 2, 118, 0, 1, 7, 71, [-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, -9289.971667863443, 23.107584966108334, 0, 1], 0, 0, 1, [-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1], 0, 0, 1, 1, 2909.960931186308, 1277.957747099409, -1.2971370057128073, 0, 6.283185307179586, "Ellipse", 10, 2, 119, 0, 1, 7, 71, [-6.123233995736766e-17, 1, 0, 0, 1, 6.123233995736766e-17, 0, 0, 0, 0, -1, 0, -17722.52670987782, -5399.365440418747, 0, 1], 0, 0, 1, [-6.123233995736766e-17, 1, 0, 0, 1, 6.123233995736766e-17, 0, 0, 0, 0, -1, 0, -17401.568747547935, -20489.29919127181, 0, 1], 0, 0, 1, 1, 1916.9366206491131, 2789.578001122757, -1.5707963267948966, 0, 6.283185307179586, "Ellipse", 10, 2, 120, 0, 1, 7, 71, [-0.7071067811856951, 0.7071067811873999, 0, 0, 0.7071067811873999, 0.7071067811856951, 0, 0, 0, 0, -1, 0, -23357.383671828775, -1064.7201708014763, 0, 1], 0, 0, 1, [-0.7071067811856951, 0.7071067811873999, 0, 0, 0.7071067811873999, 0.7071067811856951, 0, 0, 0, 0, -1, 0, -6934.054496633824, -17381.704930851134, 0, 1], 0, 0, 1, 1, 3701.785570098034, 1320.7230147568457, -1.7577755967138071, 0, 6.283185307179586, "Ellipse", 10, 2, 121, 0, 1, 7, 71, [-1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, -32145.254657867412, 0, 1725.386311696919, 1], 0, 0, 1, [-1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 3682.3939200746004, 2287.817802977561, -1.29537022309886, 0, 6.283185307179586, "Ellipse", 10, 2, 122, 0, 1, 7, 71, [-1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, -38539.145755787045, 0, 1879.4559767070298, 1], 0, 0, 1, [-1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1], 0, 0, 1, 1, 3934.813766671162, 1307.3244588461444, -0.402321097860441, 0, 6.283185307179586, "Ellipse", 10, 2, 123, 0, 1, 7, 71, [-0.25656801734669404, 0, 0.9665261778528228, 0, 0.9665261778528228, 0, 0.25656801734669404, 0, 0, 1, 0, 0, -48884.69243769194, 0, 2324.1640588586815, 1], 0, 0, 1, [-0.25656801734669404, 0, 0.9665261778528228, 0, 0.9665261778528228, 0, 0.25656801734669404, 0, 0, 1, 0, 0, -37007.13057693618, 0, -44040.80671816236, 1], 0, 0, 1, 1, 3774.70679274773, 7145.992893307455, -1.5707963267948966, 0, 6.283185307179586, "Ellipse", 10, 2, 124, 0, 1, 7, 71, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 20865.625435287715, -9648.578071219148, 0, 1], 0, 0, 1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1], 0, 0, 1, 1, 6109.921296799555, 5072.387489361921, 0, 0, 6.283185307179586, "Ellipse", 10, 2, 125, 0, 1, 7, 71, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 33318.935082427575, -17029.50021392631, 0, 1], 0, 0, 1, [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1], 0, 0, 1, 1, 5648.795158756198, 4616.2115334821865, 0, 0, 6.283185307179586], "basePt": { "x": -54366.47853395107, "y": -21645.71163970756, "z": -5551.093965462198 }, "ucs": [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1] };
+    let els = LoadEntityFromFileData(d.file) as Ellipse[];
+    let dxf = new DxfWriter();
+    for (let el of els)
+    {
+        let dxfel = Conver2DxfEntity(el, dxf);
+        expect(dxfel).toMatchSnapshot();
+    }
+});
diff --git a/src/Add-on/ACAD/Entity2DxfEntity.ts b/src/Add-on/ACAD/Entity2DxfEntity.ts
index a9eb6e2cd..26cde3e19 100644
--- a/src/Add-on/ACAD/Entity2DxfEntity.ts
+++ b/src/Add-on/ACAD/Entity2DxfEntity.ts
@@ -1,14 +1,28 @@
 import
 {
-    AngularDimLines, Arc as DxfArc, ArcDimension as DxfArcDimension, Circle as DxfCircle, CommonEntityOptions, DiameterDimension as DxfDiameterDimension, DiameterDimOptions, DimensionOptions, DxfBlock,
-    DxfWriter, Ellipse as DxfEllipse, FaceOptions, Insert, InsertOptions, InvisibleEdgeFlags, Line as DxfLine, LinearDimension as DxfLinearDimension, LinearDimOptions, LWPolyline, LWPolylineOptions, RadialDimension, RadialDimOptions, Text as DxfText, TextOptions
+    AngularDimLines,
+    CommonEntityOptions,
+    DiameterDimOptions, DimensionOptions,
+    Arc as DxfArc, ArcDimension as DxfArcDimension,
+    DxfBlock,
+    Circle as DxfCircle,
+    DiameterDimension as DxfDiameterDimension,
+    Ellipse as DxfEllipse,
+    Line as DxfLine, LinearDimension as DxfLinearDimension,
+    Text as DxfText,
+    DxfWriter,
+    FaceOptions, Insert, InsertOptions, InvisibleEdgeFlags,
+    LWPolyline, LWPolylineOptions,
+    LinearDimOptions,
+    RadialDimOptions,
+    RadialDimension,
+    TextOptions
 } from "dxf-write";
-import { BufferGeometry, Float32BufferAttribute, Geometry, Matrix4, Vector3 } from "three";
-import { MathUtils } from "three/src/math/MathUtils";
-import { IsMirror } from "../../csg/core/math/IsMirrot";
+import { BufferGeometry, Float32BufferAttribute, Geometry, MathUtils, Matrix4, Vector3 } from "three";
 import { ExtrudeHole } from "../../DatabaseServices/3DSolid/ExtrudeHole";
 import { RevolveSolid } from "../../DatabaseServices/3DSolid/RevolveSolid";
 import { SweepSolid } from "../../DatabaseServices/3DSolid/SweepSolid";
+import { DimStyleRecord } from "../../DatabaseServices/DimStyle/DimStyleRecord";
 import { LineAngularDimension } from "../../DatabaseServices/Dimension/2LineAngularDimension";
 import { AlignedDimension } from "../../DatabaseServices/Dimension/AlignedDimension";
 import { ArcDimension } from "../../DatabaseServices/Dimension/ArcDimension";
@@ -16,7 +30,6 @@ import { DiameterDimension } from "../../DatabaseServices/Dimension/DiameterDime
 import { Dimension } from "../../DatabaseServices/Dimension/Dimension";
 import { LinearDimension } from "../../DatabaseServices/Dimension/LinearDimension";
 import { RadiusDimension } from "../../DatabaseServices/Dimension/RadiusDimension";
-import { DimStyleRecord } from "../../DatabaseServices/DimStyle/DimStyleRecord";
 import { Arc } from "../../DatabaseServices/Entity/Arc";
 import { Board } from "../../DatabaseServices/Entity/Board";
 import { Circle } from "../../DatabaseServices/Entity/Circle";
@@ -28,6 +41,7 @@ import { Polyline } from "../../DatabaseServices/Entity/Polyline";
 import { Text } from "../../DatabaseServices/Text/Text";
 import { angle, polar } from "../../Geometry/GeUtils";
 import { Orbit } from "../../Geometry/Orbit";
+import { IsMirror } from "../../csg/core/math/IsMirrot";
 
 
 
@@ -106,18 +120,23 @@ export function Conver2DxfEntity(e: Entity, dxf: DxfWriter, blkName?: string)
         option.extrusion = e.Normal;
         let center = e.Center;
 
+        //ACAD与我们的实现有点不一样 他们的x必定是长轴,下面代码做一个换算
+
         let mtx = MakeMatrix4FromNormal(e.Normal);//任意轴坐标系
         let mtxInv = new Matrix4().getInverse(mtx);
         mtx.setPosition(e.Center);
 
-        let x = polar(new Vector3(), e.RadY > e.RadX ? e.Rotation + Math.PI / 2 : e.Rotation, e.RadY);
+        let [radX, radY] = [e.RadX, e.RadY];
+        if (radY > radX) [radY, radX] = [radX, radY];
+
+        let x = polar(new Vector3(), e.RadY > e.RadX ? e.Rotation + Math.PI / 2 : e.Rotation, radX);
         x.applyMatrix4(e.OCS.setPosition(0, 0, 0));
 
         let sa = 0;
         let ea = Math.PI * 2;
         if (!e.IsClose)
         {
-            let nel = new Ellipse(new Vector3, e.RadY, e.RadX, angle(x.clone().applyMatrix4(mtxInv)));
+            let nel = new Ellipse(new Vector3, radX, radY, angle(x.clone().applyMatrix4(mtxInv)));
             nel.ApplyMatrix(mtx);
             sa = nel.GetAngleAtParam(nel.GetParamAtPoint(e.StartPoint));
             ea = nel.GetAngleAtParam(nel.GetParamAtPoint(e.EndPoint));
@@ -126,7 +145,7 @@ export function Conver2DxfEntity(e: Entity, dxf: DxfWriter, blkName?: string)
         return new DxfEllipse(
             center,
             x,
-            e.RadY > e.RadX ? e.RadX / e.RadY : e.RadY / e.RadX,
+            radY / radX,
             sa, ea,
             option
         );