diff --git a/__test__/Booloperate/__snapshots__/circlebox.test.ts.snap b/__test__/Booloperate/__snapshots__/circlebox.test.ts.snap
new file mode 100644
index 000000000..31dd9390c
--- /dev/null
+++ b/__test__/Booloperate/__snapshots__/circlebox.test.ts.snap
@@ -0,0 +1,16 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`圆的包围盒 1`] = `
+Box3 {
+  "max": Vector3 {
+    "x": 797.2893269281506,
+    "y": 28.66753717738038,
+    "z": 0,
+  },
+  "min": Vector3 {
+    "x": -653.9554950751378,
+    "y": -1422.577284825908,
+    "z": 0,
+  },
+}
+`;
diff --git a/__test__/Booloperate/circlebox.test.ts b/__test__/Booloperate/circlebox.test.ts
new file mode 100644
index 000000000..7d82939b5
--- /dev/null
+++ b/__test__/Booloperate/circlebox.test.ts
@@ -0,0 +1,9 @@
+import { Circle } from "../../src/api";
+import { LoadEntityFromFileData } from "../Utils/LoadEntity.util";
+
+test('圆的包围盒', () =>
+{
+    let d = { "file": [1, "Region", 8, 2, 105, false, 1, 7, 0, [0.6691018466770633, 0.7431707198035619, 0, 0, -0.7431707198035619, 0.6691018466770633, 0, 0, 0, 0, -1, 0, 71.6669159265063, -696.9548738242638, 0, 1], 0, 0, true, [0.6691018466770633, 0.7431707198035619, 0, 0, -0.7431707198035619, 0.6691018466770633, 0, 0, 0, 0, -1, 0, 71.6669159265063, -696.9548738242638, 0, 1], 0, 1, 1, 1, 1, "Circle", 8, 2, 0, false, 0, 7, 0, [0.6691018466770633, 0.7431707198035619, 0, 0, 0.7431707198035619, -0.6691018466770633, 0, 0, 0, 0, -1, 0, 71.6669159265063, -696.9548738242638, 0, 1], 0, 0, true, [0.7431707198035619, -0.6691018466770633, 0, 0, 0.6691018466770633, 0.7431707198035619, 0, 0, 0, 0, -1, 0, -2215.799673512821, 1439.917154472948, 0, 1], 0, 1, 725.6224110016442, 0], "basePt": { "x": -653.9554950751378, "y": -1422.577284825908, "z": 0 }, "ucs": [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1] };
+    let ens = LoadEntityFromFileData(d) as Circle[];
+    expect(ens[0].BoundingBox).toMatchSnapshot();
+});
diff --git a/src/Common/Matrix4Utils.ts b/src/Common/Matrix4Utils.ts
index 1a769f51e..7526e9ab0 100644
--- a/src/Common/Matrix4Utils.ts
+++ b/src/Common/Matrix4Utils.ts
@@ -1,6 +1,6 @@
 import { Matrix4, Quaternion, Vector2, Vector3 } from 'three';
 import { CoordinateSystem } from '../Geometry/CoordinateSystem';
-import { equaln, isParallelTo, ZAxis } from '../Geometry/GeUtils';
+import { equaln, isParallelTo } from '../Geometry/GeUtils';
 
 /**
  * 设置矩阵的某列的向量
@@ -167,4 +167,4 @@ export function NormalMatrix(mtx: Matrix4)
 
 export const tempMatrix1 = new Matrix4;
 
-export const ZMirrorMatrix = GetMirrorMat(ZAxis);
+export const ZMirrorMatrix = GetMirrorMat(new Vector3(0, 0, 1));
diff --git a/src/DatabaseServices/Entity/Circle.ts b/src/DatabaseServices/Entity/Circle.ts
index aec03dc23..55b662cd4 100644
--- a/src/DatabaseServices/Entity/Circle.ts
+++ b/src/DatabaseServices/Entity/Circle.ts
@@ -10,6 +10,7 @@ import { ObjectSnapMode } from '../../Editor/ObjectSnapMode';
 import { Box3Ext } from '../../Geometry/Box';
 import { BufferGeometryUtils } from '../../Geometry/BufferGeometryUtils';
 import { angle, AsVector3, equaln, equalv2, MoveMatrix, polar, ZeroVec } from '../../Geometry/GeUtils';
+import { Orbit } from '../../Geometry/Orbit';
 import { IntersectCircleAndArc, IntersectCircleAndCircle, IntersectEllipseAndCircleOrArc, IntersectLineAndCircle, IntersectOption, IntersectPolylineAndCurve, reverseIntersectOption } from '../../GraphicsSystem/IntersectWith';
 import { RenderType } from '../../GraphicsSystem/RenderType';
 import { Factory } from '../CADFactory';
@@ -238,9 +239,20 @@ export class Circle extends Curve
     }
     //******************** Curve function end*****************//
 
+    get BoundingBoxInOCS(): Box3Ext
+    {
+        return new Box3Ext(new Vector3(-this.Radius, -this.Radius), new Vector3(this.Radius, this.Radius));
+    }
+
     get BoundingBox(): Box3Ext
     {
-        return new Box3Ext().setFromPoints(this.GetGripPoints());
+        let z = this.Normal;
+        let x = new Vector3;
+        let y = new Vector3;
+        Orbit.ComputUpDirection(z, y, x);
+        let m = new Matrix4().makeBasis(x, y, z).setPosition(this.Center);
+        //使用任意轴坐标系 以便我们正确的对齐世界坐标系
+        return this.BoundingBoxInOCS.applyMatrix4(m);
     }
 
     InitDrawObject(renderType: RenderType = RenderType.Wireframe)
diff --git a/src/Geometry/DrillParse/Face.ts b/src/Geometry/DrillParse/Face.ts
index 2d86fa772..3f8454620 100644
--- a/src/Geometry/DrillParse/Face.ts
+++ b/src/Geometry/DrillParse/Face.ts
@@ -1,13 +1,13 @@
 import { Box3, Matrix4, Vector3 } from "three";
 import { MatrixPlanarizere } from "../../Common/Matrix4Utils";
+import { Contour } from "../../DatabaseServices/Contour";
 import { Board } from "../../DatabaseServices/Entity/Board";
+import { Polyline } from "../../DatabaseServices/Entity/Polyline";
 import { Region } from "../../DatabaseServices/Entity/Region";
 import { BoolOpeartionType } from "../../GraphicsSystem/BoolOperateUtils";
 import { Box3Ext } from "../Box";
 import { equaln, XAxis } from "../GeUtils";
 import { BoardFaceType } from "./BoardGetFace";
-import { Polyline } from "../../DatabaseServices/Entity/Polyline";
-import { Contour } from "../../DatabaseServices/Contour";
 
 export interface BoardFaceParams
 {