diff --git a/zh-cn/application-dev/reference/apis-arkui/js-apis-window-sys.md b/zh-cn/application-dev/reference/apis-arkui/js-apis-window-sys.md
index 28f7fdd19d24014333013b8421d8945538d7c1b5..4779ab62b5e743b224592a239501fa7a07e1b9f4 100644
--- a/zh-cn/application-dev/reference/apis-arkui/js-apis-window-sys.md
+++ b/zh-cn/application-dev/reference/apis-arkui/js-apis-window-sys.md
@@ -2795,6 +2795,69 @@ export default class EntryAbility extends UIAbility {
 }
 ```
 
+### raiseMainWindowAboveTarget<sup>20+</sup>
+
+raiseMainWindowAboveTarget(windowId: number): Promise&lt;void&gt;
+
+将主窗口的Z序调整至同应用下的另一个主窗口之上，子窗口的Z序会跟随所属主窗口变动。使用Promise异步回调。
+
+仅支持2in1设备的系统应用主窗口调用，传入目标主窗口的id，调用窗口和目标窗口需满足：同应用进程、显示在同一屏幕、低于锁屏、非置顶主窗、非模态主窗且无模应用子窗。
+
+调用该接口抬升应用主窗口高于焦点窗口，则被抬升应用主窗口自动获焦；调用该接口降低焦点窗口，则Z序最高的应用主窗口自动获焦
+
+**系统接口：** 此接口为系统接口。
+
+**系统能力：** SystemCapability.Window.SessionManager
+
+**参数：**
+
+| 参数名   | 类型                      | 必填 | 说明       |
+| -------- | ------------------------- | ---- | ---------- |
+| windowId | number                    | 是   | 目标主窗口的id，该参数为整数，通过[getWindowProperties](arkts-apis-window-Window.md#getwindowproperties9)接口获取到[properties](arkts-apis-window-i.md#windowproperties)后，再通过properties.id获取。 |
+
+**返回值：**
+
+| 类型                | 说明                      |
+| ------------------- | ------------------------- |
+| Promise&lt;void&gt; | 无返回结果的Promise对象。 |
+
+**错误码：**
+
+以下错误码的详细介绍请参见[通用错误码](../errorcode-universal.md)和[窗口错误码](errorcode-window.md)。
+
+| 错误码ID | 错误信息 |
+| ------- | ------------------------------ |
+| 202     | Permission verification failed. A non-system application calls a system API. |
+| 801     | Capability not supported. Failed to call the API due to limited device capabilities. |
+| 1300002 | This window state is abnormal. |
+| 1300003 | This window manager service works abnormally. |
+| 1300004 | Unauthorized operation. |
+| 1300016 | Parameter error. Possible cause: 1. Invalid Parameter range. 2. Invalid parameter length. |
+
+**示例：**
+
+```ts
+// EntryAbility.ets
+import { window } from '@kit.ArkUI';
+import { UIAbility } from '@kit.AbilityKit';
+import { BusinessError } from '@kit.BasicServicesKit';
+
+export default class EntryAbility extends UIAbility {
+  // ...
+  onWindowStageCreate(windowStage: window.WindowStage): void {
+    console.info('onWindowStageCreate');
+    let targetId: number = 102;
+    windowStage.getMainWindow().then((mainWindow) => {
+      mainWindow.raiseMainWindowAboveTarget(targetId).then(() => {
+        console.info('Succeeded in raising the main window above target.');
+      }).catch((err: BusinessError) => {
+        console.error(`Failed to raise the main window above target. Cause code: ${err.code}, message: ${err.message}`);
+      });
+    });
+  }
+}
+```
+
 ### setRaiseByClickEnabled<sup>10+</sup>
 
 setRaiseByClickEnabled(enable: boolean, callback: AsyncCallback&lt;void&gt;): void