diff --git a/components/net/lwip-2.0.2/src/netif/ethernetif.c b/components/net/lwip-2.0.2/src/netif/ethernetif.c
index 09d6140b16e8fdbebe4806d305ff32e64b0e913c..a2f1be36416c952d67fbf1d19c943718d10cdcc6 100644
--- a/components/net/lwip-2.0.2/src/netif/ethernetif.c
+++ b/components/net/lwip-2.0.2/src/netif/ethernetif.c
@@ -391,6 +391,8 @@ static void eth_rx_thread_entry(void* parameter)
             /* receive all of buffer */
             while (1)
             {
+                if(device->eth_rx == RT_NULL) break;
+                
                 p = device->eth_rx(&(device->parent));
                 if (p != RT_NULL)
                 {