diff --git a/entry/src/main/ets/pages/subpages/file/SWNewFile.ets b/entry/src/main/ets/pages/subpages/file/SWNewFile.ets
index 0ba014a8..5ab201f4 100644
--- a/entry/src/main/ets/pages/subpages/file/SWNewFile.ets
+++ b/entry/src/main/ets/pages/subpages/file/SWNewFile.ets
@@ -17,29 +17,21 @@ export struct SWNewFile {
   @Local scaleBtn:number=0.05;
   //文本宽度统一缩放系数
   @Local scalingText:number=0.04;
-  @Local subWin: window.Window | undefined = undefined;
+
   aboutToAppear(): void {
     this.docCreateTime=CurrentTime();
   }
 
-  async initSubWindow(){
-    this.subWin= await mwsInfo.winStage?.createSubWindow('dirPicker');
-    this.subWin?.loadContent('pages/SubWindow/File/SWNewFile');
-  }
-
-  async selectDir(): Promise<string>{
+  selectDir():string{
     let selectDirStr='';
     let context =this.getUIContext().getHostContext() as common.Context;
-    if(this.subWin){
-      this.subWin.destroyWindow();
-    }
-    await this.initSubWindow();
     try {
       let  documentSelectOptions = new picker.DocumentSelectOptions();
-      let  documentPicker = new picker.DocumentViewPicker(context,this.subWin as window.Window);
+      let  documentPicker = new picker.DocumentViewPicker(context);
       documentSelectOptions.selectMode=picker.DocumentSelectMode.FOLDER;
       documentPicker.select(documentSelectOptions,(err: BusinessError,documentSelectResult: Array<string>) => {
         selectDirStr =documentSelectResult.toString();
+        return selectDirStr;
       })
     } catch (error) {
       const err: BusinessError = error as BusinessError;
@@ -69,8 +61,8 @@ export struct SWNewFile {
           .fontColor($r('sys.color.font_emphasize'))
           .fontWeight(FontWeight.Medium)
           .fontSize($r('sys.float.Body_L'))
-          .onClick(async () => {
-            this.dir= await this.selectDir();
+          .onClick(() => {
+            this.dir= this.selectDir();
           })
       }.height('10%')
       Row({space:5}){
diff --git a/entry/src/main/ets/pages/titletabs/TitleColumnSub.ets b/entry/src/main/ets/pages/titletabs/TitleColumnSub.ets
index 68b27357..e19b7b02 100644
--- a/entry/src/main/ets/pages/titletabs/TitleColumnSub.ets
+++ b/entry/src/main/ets/pages/titletabs/TitleColumnSub.ets
@@ -9,7 +9,7 @@ import { FileMenuData } from "../layout/FileMenuData";
 import { mwInfo } from '../displaywindowinfo/DispWinInfo'
 import { SubColumnMenu} from "../customcontroller/Button";
 import { fileIo } from "@kit.CoreFileKit";
-
+import { common,Want } from "@kit.AbilityKit";
 
 @ComponentV2
 export struct TitleColumnSub {
@@ -66,7 +66,17 @@ export struct TitleColumnSub {
       SubColumnMenu({menus:DisplayMode})
       Blank().layoutWeight(1)
       Button('TabsBar显示/隐藏').onClick(()=>{
-         this.$subOverlayState(!this.subOverlayState);
+         //this.$subOverlayState(!this.subOverlayState);
+        let want: Want = {
+          deviceId: '',
+          bundleName: 'com.example.opencax',
+          abilityName: 'SubWinAbility'
+        };
+        // 调用 context 启动
+        let context =getContext(this) as common.UIAbilityContext;
+        context.startAbility(want).then(() => {
+           console.info('yes');
+        })
       })
     }.width('100%')
      .height('100%')
diff --git a/entry/src/main/ets/subwinability/SubWinAbility.ets b/entry/src/main/ets/subwinability/SubWinAbility.ets
new file mode 100644
index 00000000..0b4ea906
--- /dev/null
+++ b/entry/src/main/ets/subwinability/SubWinAbility.ets
@@ -0,0 +1,72 @@
+import { AbilityConstant, ConfigurationConstant, UIAbility, Want } from '@kit.AbilityKit';
+import { hilog } from '@kit.PerformanceAnalysisKit';
+import { window, display, AppStorageV2, ColorMetrics } from '@kit.ArkUI';
+
+const DOMAIN = 0x0000;
+
+export default class SubWinAbility extends UIAbility {
+
+  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void {
+    try {
+      this.context.getApplicationContext().setColorMode(ConfigurationConstant.ColorMode.COLOR_MODE_NOT_SET);
+    } catch (err) {
+      hilog.error(DOMAIN, 'testTag', 'Failed to set colorMode. Cause: %{public}s', JSON.stringify(err));
+    }
+    hilog.info(DOMAIN, 'testTag', '%{public}s', 'Ability onCreate');
+  }
+
+  onDestroy(): void {
+    hilog.info(DOMAIN, 'testTag', '%{public}s', 'Ability onDestroy');
+  }
+
+  onWindowStageCreate(windowStage: window.WindowStage): void {
+    //Load page
+    windowStage.loadContent('pages/subpages/file/SWNewFile', (err) => {
+      if (err.code) {
+        hilog.error(DOMAIN, 'Tag', 'Failed to load the content. Cause: %{public}s', JSON.stringify(err));
+        return;
+      }
+      hilog.info(DOMAIN, 'testTag', 'Succeeded in loading the content.');
+    });
+
+    //Get Main Window
+    windowStage.getMainWindow((err, data) => {
+      if (err.code) {
+        console.error(`Failed to obtain the main window. Code: ${err.code}, message: ${err.message}`);
+        return;
+      }
+      //moveWindowTo
+      data.moveWindowTo(50, 50)
+      //resize mainWindow Size
+      data.resize(200,400, (err) => {
+        if (err.code) {
+          console.error(`Failed to resize the window. Code: ${err.code}, message: ${err.message}`);
+          return;
+        }
+      });
+
+      let color: string = '#00000000';
+      try {
+        data.setWindowBackgroundColor(color);
+        data.setWindowShadowEnabled(true);
+      } catch (exception) {
+        console.error(`Failed to set the background color. Cause code: ${exception.code}, message: ${exception.message}`);
+      };
+    });
+  }
+
+  onWindowStageDestroy(): void {
+    // Main window is destroyed, release UI related resources
+    hilog.info(DOMAIN, 'testTag', '%{public}s', 'Ability onWindowStageDestroy');
+  }
+
+  onForeground(): void {
+    // Ability has brought to foreground
+    hilog.info(DOMAIN, 'testTag', '%{public}s', 'Ability onForeground');
+  }
+
+  onBackground(): void {
+    // Ability has back to background
+    hilog.info(DOMAIN, 'testTag', '%{public}s', 'Ability onBackground');
+  }
+}
\ No newline at end of file
diff --git a/entry/src/main/module.json5 b/entry/src/main/module.json5
index c06fd370..0aa00b79 100644
--- a/entry/src/main/module.json5
+++ b/entry/src/main/module.json5
@@ -42,6 +42,27 @@
             ]
           }
         ]
+      },
+      {
+        "name": "SubWinAbility",
+        "srcEntry": "./ets/subwinability/SubWinAbility.ets",
+        "description": "$string:EntryAbility_desc",
+        "icon": "$media:base_opencax_logo",
+        "label": "$string:EntryAbility_label",
+        "startWindowIcon": "$media:base_start_background",
+        "startWindowBackground": "$color:start_window_background",
+        "exported": true,
+        "launchType":"standard",
+        "skills": [
+          {
+            "entities": [
+              "entity.system.home"
+            ],
+            "actions": [
+              "action.system.home"
+            ]
+          }
+        ]
       }
     ],
     "extensionAbilities": [