diff --git a/api/@ohos.net.webSocket.d.ts b/api/@ohos.net.webSocket.d.ts
index ceb8ff083026bb926c21cf93b5cf87ced580a042..f8856d93d5238657f464147adfafaca34c72d08b 100644
--- a/api/@ohos.net.webSocket.d.ts
+++ b/api/@ohos.net.webSocket.d.ts
@@ -171,6 +171,28 @@ declare namespace webSocket {
      * @since 12
      */
     protocol?: string;
+
+    /**
+     * Self defined interval of ping frame.
+     * default: 30. disable: 0. max: 30000. unit:second.
+     * Ping is performed at every pingInterval.
+     * @type {?int}
+     * @syscap SystemCapability.Communication.NetStack
+     * @since 21
+     * @arkts 1.2
+     */
+    pingInterval?: int;
+
+    /**
+     * Self defined timeout of pong frame.
+     * default: 30. max: 30000. unit:second. The value must be less than or equal to pingInterval.
+     * If no pong is received with the pongTimeout period, the websocket connection will be disconnected.
+     * @type {?int}
+     * @syscap SystemCapability.Communication.NetStack
+     * @since 21
+     * @arkts 1.2
+     */
+    pongTimeout?: int;
   }
 
   /**