diff --git a/class/ec20/at_device_ec20.c b/class/ec20/at_device_ec20.c
index e566f4e..197c16c 100644
--- a/class/ec20/at_device_ec20.c
+++ b/class/ec20/at_device_ec20.c
@@ -436,11 +436,14 @@ static int ec20_netdev_check_link_status(struct netdev *netdev)
 #define EC20_LINK_THREAD_PRIORITY       (RT_THREAD_PRIORITY_MAX - 2)
 
     rt_thread_t tid;
+    char tname[RT_NAME_MAX] = {0};
 
     RT_ASSERT(netdev);
 
+    rt_snprintf(tname, RT_NAME_MAX, "%s", netdev->name);
+
     /* create ec20 link status polling thread  */
-    tid = rt_thread_create("ec20_link", ec20_check_link_status_entry, (void *)netdev,
+    tid = rt_thread_create(tname, ec20_check_link_status_entry, (void *)netdev,
                            EC20_LINK_THREAD_STACK_SIZE, EC20_LINK_THREAD_PRIORITY, EC20_LINK_THREAD_TICK);
     if (tid != RT_NULL)
     {
@@ -886,7 +889,11 @@ static void ec20_init_thread_entry(void *parameter)
     {
         /* set network interface device status and address information */
         ec20_netdev_set_info(device->netdev);
-        ec20_netdev_check_link_status(device->netdev);
+        /* check and create link staus sync thread  */
+        if (rt_thread_find(device->netdev->name) == RT_NULL)
+        {
+            ec20_netdev_check_link_status(device->netdev);
+        }
 
         LOG_I("%s device network initialize success.", device->name);
     }
diff --git a/class/m26/at_device_m26.c b/class/m26/at_device_m26.c
index 6a4cf45..fb489cf 100644
--- a/class/m26/at_device_m26.c
+++ b/class/m26/at_device_m26.c
@@ -294,7 +294,7 @@ static int m26_netdev_check_link_status(struct netdev *netdev)
 
     RT_ASSERT(netdev);
 
-    rt_snprintf(tname, RT_NAME_MAX, "%s_link", netdev->name);
+    rt_snprintf(tname, RT_NAME_MAX, "%s", netdev->name);
 
     tid = rt_thread_create(tname, check_link_status_entry, (void *)netdev,
                            M26_LINK_THREAD_STACK_SIZE, M26_LINK_THREAD_PRIORITY, M26_LINK_THREAD_TICK);
@@ -707,7 +707,11 @@ static void m26_init_thread_entry(void *parameter)
     if (result == RT_EOK)
     {
         m26_netdev_set_info(device->netdev);
-        m26_netdev_check_link_status(device->netdev);
+        /* check and create link staus sync thread  */
+        if (rt_thread_find(device->netdev->name) == RT_NULL)
+        {
+            m26_netdev_check_link_status(device->netdev);
+        }
 
         LOG_I("%s device network initialize success.", device->name);
     }
diff --git a/class/sim76xx/at_device_sim76xx.c b/class/sim76xx/at_device_sim76xx.c
index 547d1ea..f5fc271 100644
--- a/class/sim76xx/at_device_sim76xx.c
+++ b/class/sim76xx/at_device_sim76xx.c
@@ -277,7 +277,7 @@ static int sim76xx_netdev_check_link_status(struct netdev *netdev)
 
     RT_ASSERT(netdev);
 
-    rt_snprintf(tname, RT_NAME_MAX, "%s_link", netdev->name);
+    rt_snprintf(tname, RT_NAME_MAX, "%s", netdev->name);
 
     tid = rt_thread_create(tname, check_link_status_entry, (void *)netdev,
                            SIM76XX_LINK_THREAD_STACK_SIZE, SIM76XX_LINK_THREAD_PRIORITY, SIM76XX_LINK_THREAD_TICK);
@@ -704,7 +704,11 @@ static void sim76xx_init_thread_entry(void *parameter)
     {
         /* set network interface device status and address information */
         sim76xx_netdev_set_info(device->netdev);
-        sim76xx_netdev_check_link_status(device->netdev);
+        /* check and create link staus sync thread  */
+        if (rt_thread_find(device->netdev->name) == RT_NULL)
+        {
+            sim76xx_netdev_check_link_status(device->netdev);
+        }
 
         LOG_I("%s device network initialize success!", device->name);
     }
diff --git a/class/sim800c/at_device_sim800c.c b/class/sim800c/at_device_sim800c.c
index d03a11f..25d913f 100644
--- a/class/sim800c/at_device_sim800c.c
+++ b/class/sim800c/at_device_sim800c.c
@@ -298,7 +298,7 @@ static int sim800c_netdev_check_link_status(struct netdev *netdev)
 
     RT_ASSERT(netdev);
 
-    rt_snprintf(tname, RT_NAME_MAX, "%s_link", netdev->name);
+    rt_snprintf(tname, RT_NAME_MAX, "%s", netdev->name);
 
     tid = rt_thread_create(tname, check_link_status_entry, (void *) netdev,
             SIM800C_LINK_THREAD_STACK_SIZE, SIM800C_LINK_THREAD_PRIORITY, SIM800C_LINK_THREAD_TICK);
@@ -796,7 +796,11 @@ static void sim800c_init_thread_entry(void *parameter)
     {
         /* set network interface device status and address information */
         sim800c_netdev_set_info(device->netdev);
-        sim800c_netdev_check_link_status(device->netdev);
+        /* check and create link staus sync thread  */
+        if (rt_thread_find(device->netdev->name) == RT_NULL)
+        {
+            sim800c_netdev_check_link_status(device->netdev);
+        }
 
         LOG_I("%s device network initialize success!", device->name);