diff --git a/src/DatabaseServices/Shape2.ts b/src/DatabaseServices/Shape2.ts
index 803821715..1158a7767 100644
--- a/src/DatabaseServices/Shape2.ts
+++ b/src/DatabaseServices/Shape2.ts
@@ -27,7 +27,7 @@ export class Shape2 extends Shape
                     tempArc.Radius = curve.xRadius;
 
                     //根据圆弧的角度,来确定绘制个数
-                    let count = Math.max(2, Math.ceil((tempArc.AllAngle) / Math.PI) * divisions);
+                    let count = Math.max(2, Math.abs(Math.ceil((tempArc.AllAngle) / Math.PI)) * divisions);
 
                     resolution = clamp(tempArc.Length / 20, count, 60);
                 }