diff --git a/components/tcpip_adapter/tcpip_adapter_lwip.c b/components/tcpip_adapter/tcpip_adapter_lwip.c
index 17f4e89f..f7df67da 100644
--- a/components/tcpip_adapter/tcpip_adapter_lwip.c
+++ b/components/tcpip_adapter/tcpip_adapter_lwip.c
@@ -72,6 +72,7 @@ void system_station_got_ip_set();
 
 static int dhcp_fail_time;
 static tcpip_adapter_ip_info_t esp_ip[TCPIP_ADAPTER_IF_MAX];
+static os_timer_t dhcp_check_timer;
 
 static void tcpip_adapter_dhcps_cb(u8_t client_ip[4])
 {
@@ -101,6 +102,7 @@ static void tcpip_adapter_dhcpc_done()
 {
     struct dhcp *clientdhcp = netif_dhcp_data(esp_netif[TCPIP_ADAPTER_IF_STA]) ;
 
+    os_timer_disarm(&dhcp_check_timer);
     if (netif_is_up(esp_netif[TCPIP_ADAPTER_IF_STA])) {
         if (clientdhcp->state == DHCP_STATE_BOUND) {
             /*send event here*/
@@ -110,7 +112,8 @@ static void tcpip_adapter_dhcpc_done()
         } else if (dhcp_fail_time < (CONFIG_IP_LOST_TIMER_INTERVAL * 1000 / 500)) {
             ESP_LOGD(TAG,"dhcpc time(ms): %d\n", dhcp_fail_time * 500);
             dhcp_fail_time ++;
-            sys_timeout(500, tcpip_adapter_dhcpc_done, NULL);
+            os_timer_setfn(&dhcp_check_timer, (os_timer_func_t*)tcpip_adapter_dhcpc_done, NULL);
+            os_timer_arm(&dhcp_check_timer, 500, 0);
         } else {
             ESP_LOGD(TAG,"ERROR dhcp get ip error\n");
         }
@@ -958,7 +961,9 @@ esp_err_t tcpip_adapter_dhcpc_start(tcpip_adapter_if_t tcpip_if)
                 return ESP_ERR_TCPIP_ADAPTER_DHCPC_START_FAILED;
             }
 
-            sys_timeout(500, tcpip_adapter_dhcpc_done, NULL);
+            os_timer_disarm(&dhcp_check_timer);
+            os_timer_setfn(&dhcp_check_timer, (os_timer_func_t*)tcpip_adapter_dhcpc_done, NULL);
+            os_timer_arm(&dhcp_check_timer, 500, 0);
             ESP_LOGD(TAG, "dhcp client start successfully");
             dhcpc_status[tcpip_if] = TCPIP_ADAPTER_DHCP_STARTED;
             return ESP_OK;