diff --git a/arkui/ace_engine/native/native_dialog.h b/arkui/ace_engine/native/native_dialog.h
index 95b1a6cbefda04982a2e908f85bc796178a4954b..533f9ae76b827cb1b5c2ad515b8f4f044f957134 100644
--- a/arkui/ace_engine/native/native_dialog.h
+++ b/arkui/ace_engine/native/native_dialog.h
@@ -60,6 +60,18 @@ typedef enum {
     DIALOG_DISMISS_SLIDE_DOWN,
 } ArkUI_DismissReason;
 
+/**
+* @brief Enumerates the level mode.
+*
+* @since 16
+*/
+typedef enum {
+    /** overlay mode. */
+    OVERLAY = 0,
+    /** embedded mode. */
+    EMBEDDED,
+} ArkUI_LevelMode;
+
 /**
 * @brief Invoked when the dialog box is closed.
 *
@@ -253,6 +265,17 @@ typedef struct {
     */
     int32_t (*registerOnWillDismiss)(ArkUI_NativeDialogHandle handle, ArkUI_OnWillDismissEvent eventHandler);
     /**
+    * @brief Sets the level mode for a custom dialog box.
+    *
+    * @note This method must be called before the <b>show</b> method.
+    * @param handle Indicates the pointer to the custom dialog box controller.
+    * @param levelMode Indicates the level mode. The parameter type is {@link ArkUI_LevelMode}.
+    * @return Returns the error code.
+    *         Returns {@link ARKUI_ERROR_CODE_NO_ERROR} if the operation is successful.
+    *         Returns {@link ARKUI_ERROR_CODE_PARAM_INVALID} if a parameter error occurs.
+    */
+    int32_t (*setLevelMode)(ArkUI_NativeDialogHandle handle, ArkUI_LevelMode levelMode);
+    /**
     * @brief Shows a custom dialog box.
     *
     * @param handle Indicates the pointer to the custom dialog box controller.