diff --git a/lib/entity.js b/lib/entity.js
index ffd9645..57da15a 100644
--- a/lib/entity.js
+++ b/lib/entity.js
@@ -14,12 +14,17 @@ export default class Entity {
     this._ready = false;
     this._destroyed = false;
     this._comps = [];
+    this._tweens = null;
 
     // app internal data
     this._app = null;
     this._poolID = -1;
   }
 
+  get tweens() {
+    return this._tweens;
+  }
+
   get enabledInHierarchy() {
     return this._enabled && this._ancestorEnabled;
   }
@@ -32,6 +37,27 @@ export default class Entity {
     return this._destroyed;
   }
 
+  addTween(component, prop, option) {
+    if (!this._tweens) {
+      this._tweens = this._app._vtween.newTimeLine({});
+    }
+
+    if (component === 'Entity') {
+      let vtween = this._app._vtween.newTask(this, prop, option);
+      this._tweens.add(vtween);
+      return;
+    }
+
+    let com = this.getComp(component);
+
+    if (!com) {
+      return;
+    }
+
+    let vtween = this._app._vtween.newTask(com, prop, option);
+    this._tweens.add(vtween);
+  }
+
   destroy() {
     if (this._destroyed) {
       return;