diff --git a/README.md b/README.md
index 488685c..3c71976 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@ AT device 软件包是由 RT-Thread AT 组件针对不同 AT 设备的移植文
 | ---- | ---- |
 | at_socket_esp8266.c  |  ESP8266 模块针对 AT 组件的移植文件，实现 AT socket |
 | at_socket_m26.c | M26/MC20 模块针对 AT 组件的移植文件，实现 AT socket |
+| at_socket_ec20.c | EC20 模块针对 AT 组件的移植文件，实现 AT socket |
 | at_client_sample.c | ESP8266 模块 AT Client 功能示例文件 |
 
 ### 1.2 许可证 ###
@@ -19,7 +20,7 @@ at_device package 遵循 LGPLv2.1 许可，详见 `LICENSE` 文件。
 ### 1.3 依赖 ###
 
 - RT_Thread 3.0+
-- RT_Thread AT 组件  0.3.X
+- RT_Thread AT 组件  1.0.0
 - RT_Thread SAL 组件
 
 ## 2. 获取方式 ##
@@ -31,7 +32,7 @@ AT device 软件包是对 AT 组件库和 AT socket 功能的移植，需开启
     RT-Thread Components  --->
         Network stack  --->
              Socket abstraction layer  --->
-                protocol family type  --->
+                protocol stack implement  --->
                   [ ] Support lwIP stack
                   [*] Support AT Commands stack
 
@@ -39,11 +40,13 @@ AT device 软件包是对 AT 组件库和 AT socket 功能的移植，需开启
 
     RT-Thread online packages  --->
          IoT - internet of things  --->
-            -*- AT DEVICE: RT-Thread AT component porting or samples for different device             
+            -*- AT DEVICE: RT-Thread AT component porting or samples for different device  
+            [ ]   Enable at device init by thread
                   AT socket device modules (Not selected, please select)  --->    
                   Version (latest)  --->
-
-- `AT socket device modules`: AT 设备选择，目前支持 ESP8266、M26/MC20 等设备；
+                  
+- `Enable at device init by thread`: 配置开启设备网络初始化是否通过创建线程完成；
+- `AT socket device modules`: AT 设备选择，目前支持 ESP8266、M26/MC20、EC20 等设备；
 - `Version`: 下载软件包版本；
 
 ## 3. 注意事项  ##
@@ -53,5 +56,5 @@ AT device 软件包是对 AT 组件库和 AT socket 功能的移植，需开启
 
 ## 5. 联系方式
 
-* 维护：[chenyong](https://github.com/chenyong111)
+* 维护：RT-Thread 开发团队及社区开发者
 * 主页：https://github.com/RT-Thread-packages/at_device
\ No newline at end of file
diff --git a/at_socket_ec20.c b/at_socket_ec20.c
index 08b8888..e956253 100644
--- a/at_socket_ec20.c
+++ b/at_socket_ec20.c
@@ -665,7 +665,6 @@ static int ec20_socket_send(int socket, const char *buff, size_t bfsz, enum at_s
     /* set current socket for send URC event */
     cur_socket = socket;
     /* set AT client end sign to deal with '>' sign.*/
-    extern int at_set_end_sign(char ch);
     at_set_end_sign('>');
 
     while (sent_size < bfsz)
@@ -1054,32 +1053,6 @@ static const struct at_urc urc_table[] = {
         {"+QIURC:",     "\r\n",                 urc_qiurc_func},
 };
 
-/* AT client port initialization */
-int at_client_port_init(void)
-{
-    /* create current AT socket event */
-    at_socket_event = rt_event_create("at_sock_event", RT_IPC_FLAG_FIFO);
-    if (!at_socket_event)
-    {
-        LOG_E("AT client port initialize failed! at_sock_event create failed!");
-        return -RT_ENOMEM;
-    }
-
-    /* create current AT socket lock */
-    at_event_lock = rt_mutex_create("at_event_lock", RT_IPC_FLAG_FIFO);
-    if (!at_event_lock)
-    {
-        LOG_E("AT client port initialize failed! at_sock_lock create failed!");
-        rt_event_delete(at_socket_event);
-        return -RT_ENOMEM;
-    }
-
-    /* register URC data execution function  */
-    at_set_urc_table(urc_table, sizeof(urc_table) / sizeof(urc_table[0]));
-
-    return RT_EOK;
-}
-
 #define AT_SEND_CMD(resp, resp_line, timeout, cmd)                                                              \
     do                                                                                                          \
     {                                                                                                           \
@@ -1417,17 +1390,42 @@ MSH_CMD_EXPORT_ALIAS(ec20_domain, at_domain, AT domain resolve);
 #endif
 
 static const struct at_device_ops ec20_socket_ops = {
-    .connect =              ec20_socket_connect,
-    .close =                ec20_socket_close,
-    .send =                 ec20_socket_send,
-    .domain_resolve =       ec20_domain_resolve,
-    .set_event_cb =         ec20_socket_set_event_cb,
+    ec20_socket_connect,
+    ec20_socket_close,
+    ec20_socket_send,
+    ec20_domain_resolve,
+    ec20_socket_set_event_cb,
 };
 
 static int at_socket_device_init(void)
-{
+{  
+    /* create current AT socket event */
+    at_socket_event = rt_event_create("at_se", RT_IPC_FLAG_FIFO);
+    if (!at_socket_event)
+    {
+        LOG_E("AT client port initialize failed! at_sock_event create failed!");
+        return -RT_ENOMEM;
+    }
+
+    /* create current AT socket lock */
+    at_event_lock = rt_mutex_create("at_se", RT_IPC_FLAG_FIFO);
+    if (!at_event_lock)
+    {
+        LOG_E("AT client port initialize failed! at_sock_lock create failed!");
+        rt_event_delete(at_socket_event);
+        return -RT_ENOMEM;
+    }
+
+    /* initialize AT client */
+    at_client_init(AT_DEVICE_NAME, AT_DEVICE_RECV_BUFF_LEN);
+    
+    /* register URC data execution function  */
+    at_set_urc_table(urc_table, sizeof(urc_table) / sizeof(urc_table[0]));
+    
+    /* initialize EC20 network */
     ec20_net_init();
 
+    /* set EC20 AT Socket options */
     at_scoket_device_register(&ec20_socket_ops);
 
     return 0;