diff --git a/api/@internal/component/ets/web.d.ts b/api/@internal/component/ets/web.d.ts
index 2b1d806e49325162e0f42653b757047670b667ca..08ab298f7e305c0c7addb0dd6091b40712698959 100644
--- a/api/@internal/component/ets/web.d.ts
+++ b/api/@internal/component/ets/web.d.ts
@@ -6249,6 +6249,16 @@ declare interface OnRefreshAccessedHistoryEvent {
    * @since 18
    */
   isRefreshed: boolean;
+
+  /**
+   * Whether is triggered by main frame.
+   *
+   * @type { ?boolean }
+   * @syscap SystemCapability.Web.Webview.Core
+   * @since 21
+   * @arkts 1.1&1.2
+   */
+  isMainFrame?: boolean;
 }
 
 /**