diff --git a/api/@ohos.screen.d.ts b/api/@ohos.screen.d.ts
index af9139fa25331c73ea69a78bf871427f0eebb833..2454fd08032bb046159284da569a017bee2eeeaf 100644
--- a/api/@ohos.screen.d.ts
+++ b/api/@ohos.screen.d.ts
@@ -692,6 +692,17 @@ declare namespace screen {
      */
     readonly id: number;
 
+    /**
+     * Screen rsId
+     *
+     * @type { number }
+     * @readonly
+     * @syscap SystemCapability.WindowManager.WindowManager.Core
+     * @systemapi Hide this for inner system use.
+     * @since 21
+     */
+    readonly rsId: number;
+
     /**
      * Group id
      *