diff --git a/example/main.ts b/example/main.ts
index 17af1a4..83f6be8 100644
--- a/example/main.ts
+++ b/example/main.ts
@@ -23,11 +23,17 @@ class GameApp extends Node {
 	}
 	start() {
 		this.fps.fontSize = 40;
-		this.size.set(200, 50);
+		this.size.set(300, 50);
 		console.log('start');
 	}
+
+	lastTime = 0;
 	update(time: number): void {
-        this.fps.value = (1000 / time).toFixed(2) + ' fps(帧)';
+		this.lastTime += time;
+		if (this.lastTime >= 100) {
+			this.fps.value = (1000 / time).toFixed(2) + '';
+			this.lastTime -= 100;
+		}
 	}
 }
 
diff --git a/package.json b/package.json
index d304ed7..62dd1f6 100644
--- a/package.json
+++ b/package.json
@@ -62,4 +62,4 @@
     "@tweenjs/tween.js": "^18.6.4",
     "eventemitter3": "^5.0.0"
   }
-}
+}
\ No newline at end of file
diff --git a/src/core/transform/Transform.ts b/src/core/transform/Transform.ts
index 32935c8..a7d127f 100644
--- a/src/core/transform/Transform.ts
+++ b/src/core/transform/Transform.ts
@@ -38,6 +38,16 @@ export class Transform<T extends Container = Container> {
          * 当添加到显示舞台时
          */
         ADDED: 'ADDED',
+        /**
+         * 当被移除于舞台时
+         */
+        REMOVED: 'REMOVED',
+
+        /**
+         * 可见元素发生变化时（需要渲染的元素）
+         */
+        CHANGE_DISPLY: 'CHANGE_DISPLY',
+
         /**
          * 当添加新的字节点时
          */
@@ -67,7 +77,7 @@ export class Transform<T extends Container = Container> {
      * @param classConstructor 
      */
     constructor(classConstructor?: Constructor<T>) {
-        this.id = ++ id;
+        this.id = ++id;
         if (classConstructor) {
             this.container = this.addComponent(classConstructor);
         }
@@ -123,7 +133,7 @@ export class Transform<T extends Container = Container> {
     set height(val: number) {
         this.size.y = val;
     }
-    
+
 
 
     private _scale: Vector2 = new Vector2(1, 1);
@@ -143,14 +153,14 @@ export class Transform<T extends Container = Container> {
     set scaleX(val: number) {
         this.scale.x = val;
     }
-    
+
     get scaleY() {
         return this.scale.y;
     }
     set scaleY(val: number) {
         this.scale.y = val;
     }
-    
+
     _rotation: number = 0;//Vector2 = new Vector2(0, 1);
     /**
      * 旋转
@@ -172,7 +182,7 @@ export class Transform<T extends Container = Container> {
     set anchor(value: Vector2) {
         this._anchor = value;
     }
-    
+
     get anchorX() {
         return this.anchor.x;
     }
@@ -296,7 +306,7 @@ export class Transform<T extends Container = Container> {
 
         return list;
     }
-    
+
     /**
      * 子节点
      */