diff --git a/src/views/Stage.ts b/src/views/Stage.ts
index 16debdd..1442596 100644
--- a/src/views/Stage.ts
+++ b/src/views/Stage.ts
@@ -361,8 +361,7 @@ export class Stage extends Laya.Script {
     const undo = this.data.pop_undo()
     if (undo) {
       // console.log("onClickUndo>>>>", JSON.stringify(undo))
-      this.selectedBlock = this.blocks[undo.index]
-      this.onApplyBlock(this.selectedBlock)
+      this.onApplyBlock(this.blocks[undo.index])
       if (undo.notes && undo.notes.length > 0) {
         this.selectedBlock.setNotes(undo.notes)
       } else {
@@ -372,8 +371,7 @@ export class Stage extends Laya.Script {
       const undos = this.data.get_undos()
       if (undos.length > 0) {
         const last = undos[undos.length - 1]
-        this.selectedBlock = this.blocks[last.index]
-        this.onApplyBlock(this.selectedBlock)
+        this.onApplyBlock(this.blocks[last.index])
       }
       this.onSetBlock(this.selectedBlock)
       this.onUpdateCandys()