diff --git a/src/constants/config.ts b/src/constants/config.ts
index 9f400d6..68c8884 100644
--- a/src/constants/config.ts
+++ b/src/constants/config.ts
@@ -24,12 +24,8 @@ export const config = {
     BLUE: "#2559c0",
   },
 
-  UNDO_TYPE: {
-    NORMAL: 1,
-    NOTE: 2,
-  },
-
 
+  
 
 }
 
diff --git a/src/models/DOBlock.ts b/src/models/DOBlock.ts
index 051d14d..72ce850 100644
--- a/src/models/DOBlock.ts
+++ b/src/models/DOBlock.ts
@@ -28,8 +28,7 @@ export class DOBlock {
     }
     public set_show(show: number): void {
         this.data.show = show
-        if (show == this.get_correct())
-            this.checked = true
+        this.checked = show == this.get_correct()
         StorageManager.getInstance().onChanged()
     }
 
diff --git a/src/models/DOStage.ts b/src/models/DOStage.ts
index 9e8fa5c..cf2c6d8 100644
--- a/src/models/DOStage.ts
+++ b/src/models/DOStage.ts
@@ -129,8 +129,14 @@ export class DOStage {
     public get_undos(): Array<DataUndo> {
         return this.data.undos
     }
-    public add_undo(type: number, index: number, value: number): void {
-        var dataUndo: DataUndo = {type: type, index: index, value: value}
+    public add_undo(index: number, show: number=0, notes: Array<number>=new Array()): void {
+        var _notes: Array<number>
+        if (notes) {
+            _notes = new Array()
+            for (var i=0; i<notes.length; i++)
+                _notes.push(notes[i])
+        }
+        var dataUndo: DataUndo = {index: index, show: show, notes: _notes}
         console.log("add_undo >>>>>>>>>>>>>>>>>>>>>>>>>>>>", JSON.stringify(dataUndo))
         this.data.undos.push(dataUndo)
         StorageManager.getInstance().onChanged()
diff --git a/src/types/global.ts b/src/types/global.ts
index ac55e8a..653d349 100644
--- a/src/types/global.ts
+++ b/src/types/global.ts
@@ -10,9 +10,9 @@ export interface DataBlock {
 
 //撤回数据结构
 export interface DataUndo {
-    type: number,
     index: number,
-    value: number,
+    show: number,
+    notes?: Array<number>,
 }
 
 //关卡数据
diff --git a/src/views/Block.ts b/src/views/Block.ts
index a5c7474..19351c8 100644
--- a/src/views/Block.ts
+++ b/src/views/Block.ts
@@ -119,20 +119,18 @@ export class Block extends Laya.Script {
     }
 
     public setShowNumber(showNumber: number): boolean {
-        if (this.data.get_checked() == false) {
-            this.data.set_show(showNumber)
-            var score: number = 0
-            if (this.newSelect) {
-                this.newSelect = false
-                if (this.data.get_checked()) {
-                    score = 150
-                    this.data.set_score(score)
-                    G_ShowScoreTips(score.toString(), this.label_show)
-                }       
-            }
-            this.data.clean_notes()
-            this.updateBlock()
-        }
+        this.data.set_show(showNumber)
+        // var score: number = 0
+        // if (this.newSelect) {
+        //     this.newSelect = false
+        //     if (this.data.get_checked()) {
+        //         score = 150
+        //         this.data.set_score(score)
+        //         G_ShowScoreTips(score.toString(), this.label_show)
+        //     }       
+        // }
+        this.data.clean_notes()
+        this.updateBlock()
         return this.data.get_checked()
     }
 
@@ -149,6 +147,14 @@ export class Block extends Laya.Script {
         }
         this.updateBlock()
     }
+    public setNotes(notes: Array<number>): void {
+        this.data.set_show(0)
+        this.data.clean_notes()
+        for (var i=0; i<notes.length; i++) {
+            this.data.add_note(notes[i])
+        }
+        this.updateBlock()
+    }
 
     updateBlock(): void {
         //设置文字颜色
diff --git a/src/views/Stage.ts b/src/views/Stage.ts
index 1cb7fb8..e5f4146 100644
--- a/src/views/Stage.ts
+++ b/src/views/Stage.ts
@@ -52,6 +52,7 @@ export class Stage extends Laya.Script {
     private data: DOStage;
     private selectedBlock: Block;
 
+
     //组件被激活后执行，此时所有节点和组件均已创建完毕，此方法只执行一次
     onAwake(): void {
         this.btn_back.on(Laya.Event.CLICK, this, ()=>{
@@ -209,32 +210,28 @@ export class Stage extends Laya.Script {
         this.onApplyBlock(block)
     }
 
-
-    onApplyUndo(undo: DataUndo): void {
-
-    }
     onClickUndo(evt: Laya.Event): void {
         var undo = this.data.pop_undo()
         if (undo) {
-            // console.log("onClickUndo>>>>", JSON.stringify(undo))
-            // this.selectedBlock = this.blocks[undo.index]
-            // this.onApplyBlock(this.selectedBlock)
-            // if (undo.type == config.UNDO_TYPE.NORMAL) {
-            //     var block = this.blocks[undo.index]
-
-            //     this.selectedBlock.setShowNumber(undo.value)
-            //     this.onSetBlock(this.selectedBlock)
-            // }
-            // else if (undo.type == config.UNDO_TYPE.NOTE) {
-                
-            // }
+            console.log("onClickUndo>>>>", JSON.stringify(undo))
+            this.selectedBlock = this.blocks[undo.index]
+            this.onApplyBlock(this.selectedBlock)
+            if (undo.notes && undo.notes.length > 0) {
+                this.selectedBlock.setNotes(undo.notes)
+            }
+            else {
+                this.selectedBlock.setShowNumber(undo.show)
+            }
+            this.onSetBlock(this.selectedBlock)
         }
     }    
 
     onClickErase(evt: Laya.Event): void {
-        if (this.selectedBlock.getData().get_checked() == false) {//未完成切有数字或者笔记才可以使用橡皮
-            if (this.selectedBlock.getData().get_show() > 0 || this.selectedBlock.getData().get_notes().length > 0) {
-                this.data.add_undo(config.UNDO_TYPE.NORMAL, this.selectedBlock.getData().get_index(), 0)
+        if (this.selectedBlock.getData().get_checked() == false) {//未完成且有数字或者笔记才可以使用橡皮
+            var show = this.selectedBlock.getData().get_show()
+            var notes = this.selectedBlock.getData().get_notes()
+            if (show > 0 || notes.length > 0) {
+                this.data.add_undo(this.selectedBlock.getData().get_index(), show, notes)
                 this.selectedBlock.setShowNumber(0)
                 this.onUpdateScore()
                 this.onSetBlock(this.selectedBlock)
@@ -288,6 +285,7 @@ export class Stage extends Laya.Script {
             this.data.set_hint(9)
             this.onUpdateHintStatus()
         }
+
     }  
     onUpdateHintStatus(): void {
         var hint = this.data.get_hint()
@@ -297,6 +295,8 @@ export class Stage extends Laya.Script {
     }
 
     public onApplyCandy(showNumber: number): void {
+        var show = this.selectedBlock.getData().get_show()
+        var notes = this.selectedBlock.getData().get_notes()
         if (this.selectedBlock.getData().get_checked() == false) {
             if (this.data.get_note_open()) {
                 var relateds = this.findRelatedBlocks(this.selectedBlock)
@@ -308,25 +308,26 @@ export class Stage extends Laya.Script {
                     }
                 }
                 if (find == false) {
+                    this.data.add_undo(this.selectedBlock.getData().get_index(), show, notes)
                     this.selectedBlock.addNoteNumber(showNumber)
+                    this.onSetBlock(this.selectedBlock)
                 }
                 else {
                     for (var i=0; i<relateds.length; i++) {
                         var obj = relateds[i]
-                        if (obj.getData().get_show() == showNumber) {
+                        if (obj.getData().get_show() == showNumber && obj.getData().get_index() != this.selectedBlock.getData().get_index()) {
                             obj.setFadeAnimation()
                         }
                     }
                 }
             }
             else {
+                this.data.add_undo(this.selectedBlock.getData().get_index(), show, notes)
                 if (this.selectedBlock.getData().get_show() == showNumber) {
-                    this.data.add_undo(config.UNDO_TYPE.NORMAL, this.selectedBlock.getData().get_index(), 0)
                     this.selectedBlock.setShowNumber(0);
                     this.onSetBlock(this.selectedBlock)
                 }
                 else {
-                    this.data.add_undo(config.UNDO_TYPE.NORMAL, this.selectedBlock.getData().get_index(), showNumber)
                     var b = this.selectedBlock.setShowNumber(showNumber)
                     this.onUpdateScore()
                     this.onSetBlock(this.selectedBlock, true)