diff --git a/api/@ohos.window.d.ts b/api/@ohos.window.d.ts
index 179b7ed053a19806a46d604d34831b9f1aaec453..ec99c1dd58ba5edda4ec4cb19e270fd1b2beff74 100644
--- a/api/@ohos.window.d.ts
+++ b/api/@ohos.window.d.ts
@@ -1707,6 +1707,26 @@ declare namespace window {
      * @since 14
      */
     closeButtonRightMargin? : number;
+
+    /**
+     * button icon size.
+     *
+     * @type { ?number }
+     * @syscap SystemCapability.Window.SessionManager
+     * @atomicservice
+     * @since 20
+     */
+    buttonIconSize? : number;
+
+    /**
+     * corner radius of button background when hover
+     *
+     * @type { ?number }
+     * @syscap SystemCapability.Window.SessionManager
+     * @atomicservice
+     * @since 20
+     */
+    buttonBackgroundCornerRadius? : number;
   }
 
   /**