diff --git a/assets/Scene/example_ui.fire b/assets/Scene/example_ui.fire
index 9fcda3a..3ea5c70 100644
--- a/assets/Scene/example_ui.fire
+++ b/assets/Scene/example_ui.fire
@@ -73,6 +73,9 @@
     "_components": [
       {
         "__id__": 5
+      },
+      {
+        "__id__": 6
       }
     ],
     "_prefab": null,
@@ -227,5 +230,15 @@
     "_fitWidth": false,
     "_fitHeight": true,
     "_id": "105OSN3A9FN6bqyKHCAZAF"
+  },
+  {
+    "__type__": "1ac13Sq8cxLKZtQe1hCgor0",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 2
+    },
+    "_enabled": true,
+    "_id": "e2iDQEL+dHDKK4GSCMZ1tN"
   }
 ]
\ No newline at end of file
diff --git a/assets/Script/example/UIExample.ts b/assets/Script/example/UIExample.ts
index b94bc6e..b2c3b48 100644
--- a/assets/Script/example/UIExample.ts
+++ b/assets/Script/example/UIExample.ts
@@ -1,4 +1,5 @@
 import { UIConf, uiManager } from "../ui/UIManager";
+import { resLoader } from "../res/ResLoader";
 
 // Learn TypeScript:
 //  - [Chinese] https://docs.cocos.com/creator/manual/zh/scripting/typescript.html
diff --git a/assets/Script/example/uiviews/UILogin.ts b/assets/Script/example/uiviews/UILogin.ts
index ff1044a..fe75a4d 100644
--- a/assets/Script/example/uiviews/UILogin.ts
+++ b/assets/Script/example/uiviews/UILogin.ts
@@ -9,7 +9,7 @@ export default class UILogin extends UIView {
 
     public onLogin() {
         // 连续打开2个界面
-        uiManager.open(UIID.UIHall);
+        uiManager.replace(UIID.UIHall);
         uiManager.open(UIID.UINotice);
     }
 }
diff --git a/assets/Script/res/ResLoader.ts b/assets/Script/res/ResLoader.ts
index 69bca3a..631e49e 100644
--- a/assets/Script/res/ResLoader.ts
+++ b/assets/Script/res/ResLoader.ts
@@ -250,7 +250,9 @@ export class ResLoader {
 
         if (cacheInfo.uses.size == 0 && cacheInfo.refs.size == 0) {
             //如果没有uuid,就直接释放url
-            if (item.uuid) {
+            if(this._isSceneDepend(item.url)) {
+                cc.log("resloader skip release scene depend assets :" + item.url);
+            } else if (item.uuid) {
                 cc.loader.release(item.uuid);
                 cc.log("resloader release item by uuid :" + item.id);
             } else {
@@ -261,6 +263,16 @@ export class ResLoader {
         }
     }
 
+    private _isSceneDepend(itemUrl) {
+        let scene : any = cc.director.getScene();
+        let len = scene.dependAssets.length;
+        for( let i = 0; i < len; ++i) {
+            if (scene.dependAssets[i] == itemUrl) 
+                return true;
+        }
+        return false;
+    }
+
     /**
      * 判断一个资源能否被释放
      * @param url 资源url