diff --git a/bsp/src/at_device_nt26k.c b/bsp/src/at_device_nt26k.c
index d1c156c..86730a6 100644
--- a/bsp/src/at_device_nt26k.c
+++ b/bsp/src/at_device_nt26k.c
@@ -363,7 +363,9 @@ static int at_device_nt26k_connect_tcp(struct at_device *device)
 
 int at_send_data(struct at_device *device, const char *data, rt_size_t size)
 {
+rt_mutex_take(nt26k_mutex, RT_WAITING_FOREVER);
 #define NT26K_SEND_RESP_TIME (3000)
+
     const char *line_buffer    = RT_NULL;
     at_response_t resp         = at_create_resp(AT_CLIENT_RECV_BUFF_LEN, 2, NT26K_SEND_RESP_TIME);
     if (resp == RT_NULL)
@@ -372,7 +374,7 @@ int at_send_data(struct at_device *device, const char *data, rt_size_t size)
         at_delete_resp(resp);
         return -RT_ERROR;
     }
-    rt_mutex_take(nt26k_mutex, RT_WAITING_FOREVER);
+    
     if (at_obj_exec_cmd(device->client, resp, TCP_SEND_DATA, socket_id, data) == RT_EOK)
     {
         if ((line_buffer = at_resp_get_line(resp, 2)) != RT_NULL)
diff --git a/bsp/src/bsp_nt26k.c b/bsp/src/bsp_nt26k.c
index e2191ad..34e5e51 100644
--- a/bsp/src/bsp_nt26k.c
+++ b/bsp/src/bsp_nt26k.c
@@ -1336,10 +1336,6 @@ static void Nt26k_Send_Thread_Entry(void *param)
                     if (result != RT_EOK)
                     {
                         LOG_E("nt26k send data failed result = [%d]\n", result);
-                        if (SysControl.status == kAlarmRcyEvent)
-                        {
-                            Nt26k_Send_Event(kNt26kAlarmRcyEvent);
-                        }
                     }
                 }
                 else if (nt26k_recv_event & Nt26k_Get_Event_Flag(kNt26kFaultEvent))
@@ -1360,10 +1356,6 @@ static void Nt26k_Send_Thread_Entry(void *param)
                     if (result != RT_EOK)
                     {
                         LOG_E("nt26k send data failed result = [%d]\n", result);
-                        if (SysControl.status == kFaultRcyEvent)
-                        {
-                            Nt26k_Send_Event(kNt26kFaultRcyEvent);
-                        }
                     }
                 }
                 else if (nt26k_recv_event & Nt26k_Get_Event_Flag(kNt26kSelfCheckEvent))