diff --git a/arkui/window_manager/oh_window.h b/arkui/window_manager/oh_window.h
index 793f9a758f6d9052c56e0b520dec501acd329e6e..dfb34d665032e4b4b5ec31493d081a6ad81c95d9 100644
--- a/arkui/window_manager/oh_window.h
+++ b/arkui/window_manager/oh_window.h
@@ -272,6 +272,20 @@ int32_t OH_WindowManager_GetAllWindowLayoutInfoList(int64_t displayId,
  */
 void OH_WindowManager_ReleaseAllWindowLayoutInfoList(WindowManager_Rect* windowLayoutInfoList);
 
+/**
+ * @brief app can inject a touchEvent to target window without Focus and zOrder changed, just send to ArkUI.
+ *
+ * @param windowId windowId when window is created.
+ * @param touchEvent multimodal touchEvent.
+ * @return Returns the result code.
+ *         {@link OK} the function call is successful.
+ *         {@link WINDOW_MANAGER_ERRORCODE_INVALID_PARAM} parameter error.
+ *         {@link WINDOW_MANAGER_ERRORCODE_STATE_ABNORMAL} this window state is abnormal.
+ *         {@link WINDOW_MANAGER_ERRORCODE_SYSTEM_ABNORMAL} the window manager service works abnormally.
+ * @since 20
+ */
+int32_t OH_WindowManager_InjectTouchEvent(int32_t windowId, Input_TouchEvent* touchEvent);
+
 #ifdef __cplusplus
 }
 #endif