diff --git a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/iot_mqtt_srv.c b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/iot_mqtt_srv.c
index 6a8b13c..3416c86 100644
--- a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/iot_mqtt_srv.c
+++ b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/iot_mqtt_srv.c
@@ -792,12 +792,14 @@ static void iot_connect_broker(void) {
 void iot_mqtt_handle_sock_int(uint8_t socketid, uint8_t intstat) {
     if (socketid != g_iot_socket) return;
 
-    /* CONNECT 成功 — 仅标记状态, WCHNET_HandleSockInt 已设好 RecvBuf 和 KeepLive */
+    /* CONNECT 成功 — 在中断上下文直接发 MQTT CONNECT
+       (对齐旧 mqtt_connect 行为: WCHNET SocketSend 在中断外会 hard fault) */
     if (intstat & SINT_STAT_CONNECT) {
         PRINT("IOT: TCP connected (sock=%d)\n", socketid);
         g_iot_state = IOT_STATE_TCP_CONNECTED;
         _iot_recv_len = 0;
-        // 不在此发送 CONNECT，等下一轮 iot_mqtt_poll 处理
+        iot_mqtt_send_connect();          // 在中断上下文发, 不延后到 poll
+        g_iot_state = IOT_STATE_MQTT_CONNECTING;
     }
 
     /* 收到数据 */