diff --git a/MDK-ARM/LWIP.uvguix.29643 b/MDK-ARM/LWIP.uvguix.29643
index 069200e..ef808a8 100644
--- a/MDK-ARM/LWIP.uvguix.29643
+++ b/MDK-ARM/LWIP.uvguix.29643
@@ -3705,9 +3705,9 @@
       </Doc>
       <Doc>
         <Name>..\usersrc\atcmd.c</Name>
-        <ColumnNumber>0</ColumnNumber>
+        <ColumnNumber>41</ColumnNumber>
         <TopLine>71</TopLine>
-        <CurrentLine>102</CurrentLine>
+        <CurrentLine>85</CurrentLine>
         <Folding>1</Folding>
         <ContractedFolders></ContractedFolders>
         <PaneID>0</PaneID>
diff --git a/usersrc/atcmd.c b/usersrc/atcmd.c
index d0abf08..36a4085 100644
--- a/usersrc/atcmd.c
+++ b/usersrc/atcmd.c
@@ -75,15 +75,19 @@ AT_STATUS at_cmd_ip(unsigned char *p, unsigned char len)
     {
         if (len >= sizeof(ip_address))
         {
+            /* 长度判断 */
             printf("AT+ERR\r\n");
             return AT_ERR;
         }
+        /* 拷贝len有效字符长度的字符串到ip_address中 */
         strncpy(ip_address, (const char *)p, len);
-        ip_address[len] = 0;
-        printf("ip_address:%s\r\n", ip_address);
+        ip_address[len] = 0; /* 这个必须要加，否则转换会出错 */
         inet_aton(ip_address, &int_addr);
-        printf("int_addr:%d\r\n", int_addr.addr);
-        // printf("ip address:%s\r\n", p);
+
+        config_get()->ip = int_addr.addr;
+
+        config_dump_config();
+
         printf("AT+OK\r\n");
     }
     return AT_SUCCESS;