diff --git a/Ubiquitous/XiZi_IIoT/board/cortex-m4-emulator/README.md b/Ubiquitous/XiZi_IIoT/board/cortex-m4-emulator/README.md
index f8d004f9a..b5b89263b 100644
--- a/Ubiquitous/XiZi_IIoT/board/cortex-m4-emulator/README.md
+++ b/Ubiquitous/XiZi_IIoT/board/cortex-m4-emulator/README.md
@@ -91,8 +91,8 @@ git clone https://gitlink.org.cn/xuos/xiuos.git
 
 使用VScode打开代码，具体操作步骤为：在源码文件夹下打开系统终端，输入`code .`即可打开VScode开发环境，如下图所示：
 
-<div align= "center"> 
-<img src = img/vscode.jpg  width =1000>
+<div align= "center">
+<img src="img/vscode.jpg"  width =1000>
   </div>
 
 
@@ -145,14 +145,14 @@ make BOARD=cortex-m4-emulator menuconfig
 
 2.在menuconfig界面配置需要关闭和开启的功能，按回车键进入下级菜单，按Y键选中需要开启的功能，按N键选中需要关闭的功能，配置结束后保存并退出（本例旨在演示简单的输出例程，所以没有需要配置的选项，双击快捷键ESC退出配置）
 
-<div align= "center"> 
-<img src = img/menuconfig.png  width =1000>
+<div align= "center">
+<img src="img/menuconfig.png"  width =1000>
   </div>
 
 退出时选择`yes`保存上面所配置的内容，如下图所示：
 
-<div align= "center"> 
-<img src = img/menuconfig1.png  width =1000>
+<div align= "center">
+<img src="img/menuconfig1.png"  width =1000>
   </div>
 
 3.继续执行以下命令，进行编译
@@ -183,8 +183,8 @@ qemu-system-arm -machine netduinoplus2  -nographic -kernel build/XiZi-cortex-m4-
 
 QEMU运行起来后将会在终端上看到信息打印输出
 
-<div align= "center"> 
-<img src = img/terminal.png  width =1000>
+<div align= "center">
+<img src="img/terminal.png"  width =1000>
   </div>
 
 ### 4.3 调试
@@ -204,5 +204,5 @@ qemu-system-arm -machine netduinoplus2  -nographic -kernel build/XiZi-cortex-m4-
 然后要重新开启另一个linux系统终端一个终端，执行`riscv-none-embed-gdb`命令
 
 ```
-gdb-multiarch build/XiZi-cortex-m4-emulator.elf -ex "target remote localhost:1234" 
+gdb-multiarch build/XiZi-cortex-m4-emulator.elf -ex "target remote localhost:1234"
 ```
\ No newline at end of file
diff --git a/Ubiquitous/XiZi_IIoT/resources/ethernet/cmd_lwip/lwip_udp_demo.c b/Ubiquitous/XiZi_IIoT/resources/ethernet/cmd_lwip/lwip_udp_demo.c
index 0456aa419..71c6bc703 100755
--- a/Ubiquitous/XiZi_IIoT/resources/ethernet/cmd_lwip/lwip_udp_demo.c
+++ b/Ubiquitous/XiZi_IIoT/resources/ethernet/cmd_lwip/lwip_udp_demo.c
@@ -20,10 +20,10 @@
 #include "board.h"
 #include "sys_arch.h"
 #include "lwip/udp.h"
-#include "lwip/sockets.h"
 #include <shell.h>
 #include <sys.h>
 #include <xizi.h>
+#include "lwip/sockets.h"
 
 
 #define PBUF_SIZE 27
@@ -102,8 +102,8 @@ void *LwipUdpSendTest(int argc, char *argv[])
         udp_interval = 100;
     } else {
         strncpy(udp_demo_msg, argv[1], strlen(argv[1]));
-        strncat(udp_demo_msg, "\r\n", 2);
-        if(argc == 3) {
+        strncat(udp_demo_msg, "\r\n", 3);
+        if(argc >= 3) {
             sscanf(argv[2], "%d.%d.%d.%d:%d", &udp_server_ip[0], &udp_server_ip[1], &udp_server_ip[2], &udp_server_ip[3], &udp_server_port);
         }
         if(argc > 3) {
@@ -119,7 +119,7 @@ void *LwipUdpSendTest(int argc, char *argv[])
     sys_thread_new("udp send", LwipUDPSendTask, NULL, LWIP_TASK_STACK_SIZE, LWIP_DEMO_TASK_PRIO);
 }
 
-SHELL_EXPORT_CMD(SHELL_CMD_PERMISSION(0) | SHELL_CMD_TYPE(SHELL_TYPE_CMD_MAIN) | SHELL_CMD_PARAM_NUM(3),
+SHELL_EXPORT_CMD(SHELL_CMD_PERMISSION(0) | SHELL_CMD_TYPE(SHELL_TYPE_CMD_MAIN) | SHELL_CMD_PARAM_NUM(5),
      UDPSend, LwipUdpSendTest, UDPSend msg [ip:port [num [interval]]]);
 
 void LwipUdpRecvTest(void)