diff --git a/zh-cn/application-dev/windowmanager/application-window-stage.md b/zh-cn/application-dev/windowmanager/application-window-stage.md
index 6a8c67a9c395620bd8660db34559e795ab2f31c7..209481afbeb2873152d3e096d620ba99bdce3e66 100644
--- a/zh-cn/application-dev/windowmanager/application-window-stage.md
+++ b/zh-cn/application-dev/windowmanager/application-window-stage.md
@@ -320,7 +320,6 @@ export default class EntryAbility extends UIAbility {
 
    ```ts
    import UIAbility from '@ohos.app.ability.UIAbility';
-   import ExtensionContext from '@ohos.app.ability.ServiceExtensionAbility';
    import window from '@ohos.window';
    
    export default class EntryAbility extends UIAbility {