diff --git a/api/@internal/component/ets/common.d.ts b/api/@internal/component/ets/common.d.ts
index 3506a6f9f5c619ca6d4af5cee392129eb4c17542..e5696e2fc0b92d5debd1e498afdca6a1433b4b94 100644
--- a/api/@internal/component/ets/common.d.ts
+++ b/api/@internal/component/ets/common.d.ts
@@ -250,6 +250,12 @@ interface ItemDragInfo {
   y: number;
 }
 
+/**
+ * Defining syscap function.
+ * @since 8
+ */
+declare function canIUse(syscap: string): boolean;
+
 /**
  * Defining animation function.
  * @since 7