diff --git a/src/DatabaseServices/Dimension/AlignedDimension.ts b/src/DatabaseServices/Dimension/AlignedDimension.ts
index b15c7f074..c33292b33 100644
--- a/src/DatabaseServices/Dimension/AlignedDimension.ts
+++ b/src/DatabaseServices/Dimension/AlignedDimension.ts
@@ -281,10 +281,18 @@ export class AlignedDimension extends Entity
         let armAn = angle(armV);
 
         arrow1.position.copy(this.m_ArmP1);
-        arrow1.rotation.z = armAn - Math.PI / 2;
-        arrow1.updateMatrix();
         arrow2.position.copy(this.m_ArmP2);
-        arrow2.rotation.z = armAn + Math.PI / 2;
+        if (this.m_ArmP1.distanceTo(this.m_ArmP2) < 36)
+        {
+            arrow1.rotation.z = armAn + Math.PI / 2;
+            arrow2.rotation.z = armAn - Math.PI / 2;
+        }
+        else
+        {
+            arrow1.rotation.z = armAn - Math.PI / 2;
+            arrow2.rotation.z = armAn + Math.PI / 2;
+        }
+        arrow1.updateMatrix();
         arrow2.updateMatrix();
 
         //更新引线this._LeadOutLine 并返回新的字体位置