diff --git a/src/Editor/SelectControls.ts b/src/Editor/SelectControls.ts
index f615fb993..7bd493250 100644
--- a/src/Editor/SelectControls.ts
+++ b/src/Editor/SelectControls.ts
@@ -138,9 +138,10 @@ export class SelectControls
         app.m_Editor.m_CommandStore.isCmdIng = true;
 
 
-        let en = app.m_Viewer.m_PreViewer.m_LastEntity.userData as Entity;
+        let obj = app.m_Viewer.m_PreViewer.m_LastEntity;
+        let en = obj.userData as Entity;
 
-        app.m_Editor.AddNoSnapEntity(app.m_Viewer.m_PreViewer.m_LastEntity);
+        app.m_Editor.AddNoSnapEntity(obj);
 
         let lastP = app.m_Viewer.m_PreViewer.m_LastSnapPoint.clone();
         app.m_Viewer.ScreenToWorld(lastP);
@@ -156,9 +157,9 @@ export class SelectControls
             }
         })
 
-        app.m_Editor.RemoveNoSnapEntity(app.m_Viewer.m_PreViewer.m_LastEntity);
+        app.m_Editor.RemoveNoSnapEntity(obj);
 
-        app.m_Viewer.m_GripScene.Update(app.m_Viewer.m_PreViewer.m_LastEntity);
+        app.m_Viewer.m_GripScene.Update(obj);
 
         app.m_Editor.m_CommandStore.isCmdIng = false;
 
@@ -168,17 +169,17 @@ export class SelectControls
     {
         if (e.button === MouseKey.Left)
         {
-            if (app.m_Viewer.m_GripScene.children.length > 0 && app.m_Viewer.m_PreViewer.m_LastSnapPoint && app.m_Editor.m_InputState == 0 && !this.m_SelectIng)
+            if (this.m_Editor.m_InputState <= 1)
             {
-                this.GridDrag();
-                return;
-            }
+                if (app.m_Viewer.m_GripScene.children.length > 0 && app.m_Viewer.m_PreViewer.m_LastSnapPoint && app.m_Editor.m_InputState == 0 && !this.m_SelectIng)
+                {
+                    this.GridDrag();
+                    return;
+                }
 
-            let pt = this.m_Editor.m_MouseCtrl.m_CurMousePointVCS;
-            let isRemove = app.m_Editor.m_KeyCtrl.KeyIsDown(KeyBoard.Shift);
+                let pt = this.m_Editor.m_MouseCtrl.m_CurMousePointVCS;
+                let isRemove = app.m_Editor.m_KeyCtrl.KeyIsDown(KeyBoard.Shift);
 
-            if (this.m_Editor.m_InputState <= 1)
-            {
                 //如果还没选择 那么
                 if (!this.m_SelectIng)
                 {