diff --git a/api/@internal/component/ets/xcomponent.d.ts b/api/@internal/component/ets/xcomponent.d.ts
index ef19b96d114155e22d49c5761d45f15a4d750540..9189c3f90e32b59e7522cc4492213519df8d3787 100644
--- a/api/@internal/component/ets/xcomponent.d.ts
+++ b/api/@internal/component/ets/xcomponent.d.ts
@@ -39,6 +39,16 @@ declare class XComponentController {
    * @systemapi
    */
   getXComponentContext();
+
+  /**
+   * set the surface size created by XComponent.
+   * @since 8
+   * @systemapi
+   */
+  setXComponentSurfaceSize(value: {
+    surfaceWidth: number;
+    surfaceHeight: number;
+  });
 }
 
 /**