diff --git a/src/DatabaseServices/Entity/Extrude.ts b/src/DatabaseServices/Entity/Extrude.ts
index fa49324be..a0b99d805 100644
--- a/src/DatabaseServices/Entity/Extrude.ts
+++ b/src/DatabaseServices/Entity/Extrude.ts
@@ -422,7 +422,7 @@ export class ExtrudeSolid extends Entity
         this.height = size.y;
         if (equaln(size.x, 0) || equaln(size.y, 0))
             Log(`注意!!该板件尺寸为0!`);
-        this.isRect = equaln(this.width * this.height, this.ContourCurve.Area, 1);
+        this.isRect = equaln(this.width * this.height, this.ContourCurve.Area, 0.1);
 
         //修正轮廓基点
         if (!equalv3(box.min, ZeroVec))