diff --git a/src/Add-on/Align.ts b/src/Add-on/Align.ts
index f1af5a677..39f8e3a91 100644
--- a/src/Add-on/Align.ts
+++ b/src/Add-on/Align.ts
@@ -4,7 +4,7 @@ import { PromptStatus } from "../Editor/PromptResult";
 import { Entity } from './../DatabaseServices/Entity/Entity';
 import { JigUtils } from './../Editor/JigUtils';
 import { Line } from "../DatabaseServices/Entity/Line";
-import { angleTo, equalv3, isParallelTo } from './../Geometry/GeUtils';
+import { angleTo, equalv3, isParallelTo, ZeroVec } from './../Geometry/GeUtils';
 import { Matrix4 } from 'three';
 import { Vector3 } from 'three';
 import { matrixScale } from "../Common/Matrix4Utils";
@@ -39,21 +39,25 @@ export class Align implements Command
         let v11 = po1.clone().sub(p1);
 
         let v12 = p2.clone().sub(p1);
-        let vo12 = po2.clone().sub(po1);
+        let vo12 = po2.clone().sub(po1).normalize();
         let roAxis = v12.clone().cross(vo12).normalize();
-        if (isParallelTo(roAxis, ents[0].Normal))
-            roAxis.copy(ents[0].Normal);
-        let roInv = new Matrix4().extractRotation(ents[0].SpaceOCSInv);
-        let rAng = angleTo(v12.applyMatrix4(roInv), vo12.applyMatrix4(roInv));
-        let roMtx = new Matrix4().makeRotationAxis(roAxis, rAng);
+
+
+        let rAng = 0;
+        let roMtx = new Matrix4();
+        if (!equalv3(roAxis, ZeroVec))
+        {
+            rAng = angleTo(v12, vo12, roAxis);
+            roMtx.makeRotationAxis(roAxis, rAng);
+        }
 
         let ptRes = await app.Editor.GetPoint({
             Msg: "选择第三个目标源点<继续>",
             AllowNone: true,
         });
 
-        let canScale = false;
-        let scaleMtx = new Matrix4();
+        // let canScale = false;
+        // let scaleMtx = new Matrix4();
         let roMat2: Matrix4;
         if (ptRes.Status === PromptStatus.OK)
         {
@@ -63,33 +67,32 @@ export class Align implements Command
             if (!po3) return;
             JigUtils.Draw(new Line(p3, po3));
 
-            let v13 = p3.clone().sub(p1).applyMatrix4(roInv);
-            let vo13 = po3.clone().sub(po1).applyMatrix4(roInv);
+            let v13 = p3.clone().sub(p1);
+            let vo13 = po3.clone().sub(po1);
 
             let d1 = v13.cross(v12).normalize().applyMatrix4(roMtx);
             let d2 = vo13.cross(vo12).normalize();
             if (!equalv3(d1, d2))
             {
-                vo12 = po2.clone().sub(po1);
-                roMat2 = new Matrix4().makeRotationAxis(vo12.normalize(), angleTo(d2, d1));
+                roMat2 = new Matrix4().makeRotationAxis(vo12, angleTo(d1, d2, vo12));
             }
         }
         else if (ptRes.Status === PromptStatus.None)
         {
-            let keyRes = await app.Editor.GetKeyWords({
-                Msg: "是否基于对齐点缩放对象",
-                Default: "N",
-                KeyWordList: [{ msg: "是", key: "Y" }, { msg: "否", key: "N" }]
-            });
-            canScale = keyRes.StringResult === "Y";
-            scaleMtx = matrixScale(vo12.length() / v12.length(), p1);
+            // let keyRes = await app.Editor.GetKeyWords({
+            //     Msg: "是否基于对齐点缩放对象",
+            //     Default: "N",
+            //     KeyWordList: [{ msg: "是", key: "Y" }, { msg: "否", key: "N" }]
+            // });
+            // canScale = keyRes.StringResult === "Y";
+            // scaleMtx = matrixScale(vo12.length() / v12.length(), p1);
         }
         else return;
 
         for (let en of ents)
         {
-            if (canScale)
-                en.ApplyMatrix(scaleMtx);
+            // if (canScale)
+            //     en.ApplyMatrix(scaleMtx);
             en.Position = en.Position.sub(p1);
             en.ApplyMatrix(roMtx);
             if (roMat2)
diff --git a/src/Geometry/GeUtils.ts b/src/Geometry/GeUtils.ts
index 32f4baaa2..c006683a7 100644
--- a/src/Geometry/GeUtils.ts
+++ b/src/Geometry/GeUtils.ts
@@ -117,6 +117,9 @@ export function angleTo(v1: Vector3, v2: Vector3, ref: Vector3 = new Vector3(0,
 {
     if (!ref.equals(new Vector3(0, 0, 1)))
     {
+        ref = ref.clone();
+        v1 = v1.clone();
+        v2 = v2.clone();
         //任意轴坐标系. 使用相机的构造矩阵.
         ref.multiplyScalar(-1);
         let up = getLoocAtUpVec(ref);