diff --git a/__test__/Polyline/__snapshots__/offset.test.ts.snap b/__test__/Polyline/__snapshots__/offset.test.ts.snap
index 46a71b6dc..6393ff35f 100644
--- a/__test__/Polyline/__snapshots__/offset.test.ts.snap
+++ b/__test__/Polyline/__snapshots__/offset.test.ts.snap
@@ -16,21 +16,21 @@ exports[`中间区域需要圆裁剪 1`] = `1`;
 
 exports[`中间区域需要圆裁剪 2`] = `24.711300177432392`;
 
-exports[`圆求交错误导致的线丢失 1`] = `4148.643109243218`;
+exports[`圆求交错误导致的线丢失 1`] = `4148.643077512141`;
 
-exports[`圆求交错误导致的线丢失 2`] = `4425.268216257021`;
+exports[`圆求交错误导致的线丢失 2`] = `4425.2680383915285`;
 
 exports[`圆求交错误导致的线丢失 3`] = `4021.8883370297244`;
 
-exports[`圆求交错误导致的线丢失 4`] = `4581.211434067452`;
+exports[`圆求交错误导致的线丢失 4`] = `4581.211144290334`;
 
 exports[`圆求交错误导致的线丢失 5`] = `3900.596094685299`;
 
-exports[`圆求交错误导致的线丢失 6`] = `4757.455448859379`;
+exports[`圆求交错误导致的线丢失 6`] = `4757.455003004337`;
 
 exports[`圆求交错误导致的线丢失 7`] = `3783.7370117939813`;
 
-exports[`圆求交错误导致的线丢失 8`] = `4971.999047743349`;
+exports[`圆求交错误导致的线丢失 8`] = `4971.998320028233`;
 
 exports[`多段线存在0长度线段导致偏移错误 1`] = `1`;
 
diff --git a/__test__/Polyline/__snapshots__/offsetbug.test.ts.snap b/__test__/Polyline/__snapshots__/offsetbug.test.ts.snap
index 3269b40c6..efcab8e0c 100644
--- a/__test__/Polyline/__snapshots__/offsetbug.test.ts.snap
+++ b/__test__/Polyline/__snapshots__/offsetbug.test.ts.snap
@@ -2,7 +2,7 @@
 
 exports[`补充bug测试#IKWGF 1`] = `1.1376402440608806`;
 
-exports[`补充bug测试#IKWGF 2`] = `0.44573896329246554`;
+exports[`补充bug测试#IKWGF 2`] = `0.44573816538516137`;
 
 exports[`补充bug测试#IKWGF 3`] = `10.73282822209507`;
 
@@ -16,10 +16,10 @@ exports[`补充bug测试#IKWGF 7`] = `14.066950838248612`;
 
 exports[`补充bug测试#IKWGF 8`] = `2.168984971098264`;
 
-exports[`补充bug测试#IKWGF 9`] = `11.89085508498112`;
+exports[`补充bug测试#IKWGF 9`] = `11.890848111457423`;
 
 exports[`补充bug测试#IKWGF 10`] = `1.0803373815793473`;
 
-exports[`补充bug测试#IKWGF 11`] = `0.3947454693903588`;
+exports[`补充bug测试#IKWGF 11`] = `0.39474205429703246`;
 
 exports[`补充bug测试#IKWGF 12`] = `10.698715561269278`;
diff --git a/src/GraphicsSystem/OffsetPolyline.ts b/src/GraphicsSystem/OffsetPolyline.ts
index 9c1375f27..f822c43b8 100644
--- a/src/GraphicsSystem/OffsetPolyline.ts
+++ b/src/GraphicsSystem/OffsetPolyline.ts
@@ -122,47 +122,12 @@ export class PolyOffsetUtil
                 if (c2b.min.y - 1e-6 > c1b.max.y)
                     continue;
 
-                let c1StartPt = c1.StartPoint;
-                let c1EndPt = c1.EndPoint;
-                let c2StartPt = c2.StartPoint;
-                let c2EndPt = c2.EndPoint;
-
-                //同心圆弧
-                let equalArc = c1 instanceof Arc && c2 instanceof Arc && equalv3(c1.Center, c2.Center);
-
-                //被包含的直线删掉
-                if ((c1 instanceof Line && c2 instanceof Line) || equalArc)
-                {
-                    //c1完全在c2内
-                    if (c2.PtOnCurve(c1StartPt) && c2.PtOnCurve(c1EndPt))
-                    {
-                        this.m_RetCurves.splice(i, 1);
-                        i--;
-                        break;
-                    }
-                    else if (c1.PtOnCurve(c2StartPt) && c1.PtOnCurve(c2EndPt))
-                    {
-                        // c2完全在c1内
-                        this.m_RetCurves.splice(j, 1);
-                        j--;
-                        continue;
-                    }
-                }
-
-                //如果线段端点相连,跳过
-                let isLink = [c1StartPt, c1EndPt].some(p => equalv3(p, c2StartPt) || equalv3(p, c2EndPt));
-                if (isLink) continue;
-
-                if (equalArc || c1.IntersectWith(c2, IntersectOption.OnBothOperands).length > 0)
+                if (c1.Join(c2))
                 {
-                    let isJoin = c1.Join(c2);
-                    if (isJoin)
-                    {
-                        boxCurves.set(c1, c1.BoundingBox);
-                        this.m_RetCurves.splice(j, 1);
-                        j--;
-                        continue;
-                    }
+                    this.m_RetCurves.splice(j, 1);
+                    c1b = c1.BoundingBox;
+                    boxCurves.set(c1, c1b);
+                    j--;
                 }
             }
         }