diff --git a/APP_Framework/Applications/app_test/test_ethernet.c b/APP_Framework/Applications/app_test/test_ethernet.c
index 5574d2fcb..6e551c004 100644
--- a/APP_Framework/Applications/app_test/test_ethernet.c
+++ b/APP_Framework/Applications/app_test/test_ethernet.c
@@ -9,7 +9,6 @@
 #define TCP_PORT  12345
 
 const static uint32_t sn = 0;
-const static uint32_t socket_tcp = 0;
 
 #ifdef ETHERNET_AS_SERVER
 static int32_t wiz_server_op(uint8_t sn, uint8_t *buf, uint32_t buf_size,
@@ -26,9 +25,9 @@ static int32_t wiz_server_op(uint8_t sn, uint8_t *buf, uint32_t buf_size,
         uint32_t sent_size = 0;
         memset(buf,0,buf_size);
         strcpy(buf,"The message has been recved");
-        ret = wiz_sock_send(socket_tcp, buf, buf_size);
+        ret = wiz_sock_send(sn, buf, buf_size);
         if (ret < 0) {
-          wiz_sock_close(socket_tcp);
+          wiz_sock_close(sn);
           return ret;
         }
       } else if (opt == RECV_DATA) {
@@ -87,27 +86,27 @@ static uint32_t wiz_client_op(uint8_t sn, uint8_t *buf, uint32_t buf_size,
                        enum TCP_OPTION opt) {
   // assert(buf_size <= g_wiznet_buf_size);
   int32_t ret;
-  switch (getSn_SR(socket_tcp)) {
+  switch (getSn_SR(sn)) {
     case SOCK_CLOSE_WAIT:
-      wiz_sock_disconnect(socket_tcp);
+      wiz_sock_disconnect(sn);
       break;
     case SOCK_CLOSED:
-      wiz_socket(socket_tcp, Sn_MR_TCP, 5000, 0x00);
+      wiz_socket(sn, Sn_MR_TCP, 5000, 0x00);
       break;
     case SOCK_INIT:
       KPrintf("[SOCKET CLIENT] sock init.\n");
-      wiz_sock_connect(socket_tcp, dst_ip, dst_port);
+      wiz_sock_connect(sn, dst_ip, dst_port);
       break;
     case SOCK_ESTABLISHED:
-      if (getSn_IR(socket_tcp) & Sn_IR_CON) {
-        printf("[SOCKET CLIENT] %d:Connected\r\n", socket_tcp);
-        setSn_IR(socket_tcp, Sn_IR_CON);
+      if (getSn_IR(sn) & Sn_IR_CON) {
+        printf("[SOCKET CLIENT] %d:Connected\r\n", sn);
+        setSn_IR(sn, Sn_IR_CON);
       }
       if (opt == SEND_DATA) {
         uint32_t sent_size = 0;
-        ret = wiz_sock_send(socket_tcp, buf, buf_size);
+        ret = wiz_sock_send(sn, buf, buf_size);
         if (ret < 0) {
-          wiz_sock_close(socket_tcp);
+          wiz_sock_close(sn);
           return ret;
         }
       } else if (opt == RECV_DATA) {
@@ -145,15 +144,18 @@ void TestSocketAsClient(int argc, char *argv[])
     }
     
     while(1){
-      ret = wiz_client_op(client_sock, argv[2], sizeof(argv[2]), destination_ip, port,SEND_DATA);
-      PrivTaskDelay(10);
+      ret = wiz_client_op(client_sock, argv[2], strlen(argv[2]), destination_ip, port,SEND_DATA);
+      printf("sizeof:%d\n",strlen(argv[2]));
+      PrivTaskDelay(1000); 
       if (ret > 0) {
         ret=wiz_client_op(client_sock, buf, BUFF_SIZE, destination_ip, port, RECV_DATA);
-        printf("client recv msg successfully!\n");
-        printf("%s\n",buf);       
-        break;  
+        printf("read ret is %d\n",ret);
+        if(ret>0){
+          printf("client recv msg successfully!\n");
+          printf("%s\n",buf);            
+        }
       };
-      PrivTaskDelay(100);      
+      PrivTaskDelay(1000);      
     }
 
 
diff --git a/Ubiquitous/XiZi_IIoT/board/edu-riscv64/third_party_driver/ethernet/connect_w5500.c b/Ubiquitous/XiZi_IIoT/board/edu-riscv64/third_party_driver/ethernet/connect_w5500.c
index ba1e0b810..62ad935e7 100644
--- a/Ubiquitous/XiZi_IIoT/board/edu-riscv64/third_party_driver/ethernet/connect_w5500.c
+++ b/Ubiquitous/XiZi_IIoT/board/edu-riscv64/third_party_driver/ethernet/connect_w5500.c
@@ -22,7 +22,6 @@ extern void spi_select_cs(void);
 extern void spi_deselete_cs(void);
 
 // global configurations for w5500 tcp connection
-const uint32_t socket_tcp = 0;
 const uint32_t g_wiznet_buf_size = 2048;
 
 static wiz_NetInfo g_wiz_netinfo = {.mac = {0x00, 0x08, 0xdc, 0x11, 0x11, 0x11},
@@ -269,27 +268,27 @@ uint32_t wiz_client_op(uint8_t sn, uint8_t *buf, uint32_t buf_size,
                        enum TCP_OPTION opt) {
   // assert(buf_size <= g_wiznet_buf_size);
   int32_t ret;
-  switch (getSn_SR(socket_tcp)) {
+  switch (getSn_SR(sn)) {
     case SOCK_CLOSE_WAIT:
-      wiz_sock_disconnect(socket_tcp);
+      wiz_sock_disconnect(sn);
       break;
     case SOCK_CLOSED:
-      wiz_socket(socket_tcp, Sn_MR_TCP, 5000, 0x00);
+      wiz_socket(sn, Sn_MR_TCP, 5000, 0x00);
       break;
     case SOCK_INIT:
       KPrintf("[SOCKET CLIENT] sock init.\n");
-      wiz_sock_connect(socket_tcp, dst_ip, dst_port);
+      wiz_sock_connect(sn, dst_ip, dst_port);
       break;
     case SOCK_ESTABLISHED:
-      if (getSn_IR(socket_tcp) & Sn_IR_CON) {
-        printf("[SOCKET CLIENT] %d:Connected\r\n", socket_tcp);
-        setSn_IR(socket_tcp, Sn_IR_CON);
+      if (getSn_IR(sn) & Sn_IR_CON) {
+        printf("[SOCKET CLIENT] %d:Connected\r\n", sn);
+        setSn_IR(sn, Sn_IR_CON);
       }
       if (opt == SEND_DATA) {
         uint32_t sent_size = 0;
-        ret = wiz_sock_send(socket_tcp, buf, buf_size);
+        ret = wiz_sock_send(sn, buf, buf_size);
         if (ret < 0) {
-          wiz_sock_close(socket_tcp);
+          wiz_sock_close(sn);
           return ret;
         }
       } else if (opt == RECV_DATA) {
@@ -348,9 +347,9 @@ int32_t wiz_server_op(uint8_t sn, uint8_t *buf, uint32_t buf_size,
       }
       if (opt == SEND_DATA) {
         uint32_t sent_size = 0;
-        ret = wiz_sock_send(socket_tcp, buf, buf_size);
+        ret = wiz_sock_send(sn, buf, buf_size);
         if (ret < 0) {
-          wiz_sock_close(socket_tcp);
+          wiz_sock_close(sn);
           return ret;
         }
       } else if (opt == RECV_DATA) {
diff --git a/Ubiquitous/XiZi_IIoT/board/xidatong-riscv64/third_party_driver/ethernet/connect_w5500.c b/Ubiquitous/XiZi_IIoT/board/xidatong-riscv64/third_party_driver/ethernet/connect_w5500.c
index 22803ee9e..93fcba38c 100644
--- a/Ubiquitous/XiZi_IIoT/board/xidatong-riscv64/third_party_driver/ethernet/connect_w5500.c
+++ b/Ubiquitous/XiZi_IIoT/board/xidatong-riscv64/third_party_driver/ethernet/connect_w5500.c
@@ -22,7 +22,6 @@ extern void spi_select_cs(void);
 extern void spi_deselete_cs(void);
 
 // global configurations for w5500 tcp connection
-const uint32_t socket_tcp = 0;
 const uint32_t g_wiznet_buf_size = 2048;
 
 static wiz_NetInfo g_wiz_netinfo = {.mac = {0x00, 0x08, 0xdc, 0x11, 0x11, 0x11},
@@ -269,27 +268,27 @@ uint32_t wiz_client_op(uint8_t sn, uint8_t *buf, uint32_t buf_size,
                        enum TCP_OPTION opt) {
   // assert(buf_size <= g_wiznet_buf_size);
   int32_t ret;
-  switch (getSn_SR(socket_tcp)) {
+  switch (getSn_SR(sn)) {
     case SOCK_CLOSE_WAIT:
-      wiz_sock_disconnect(socket_tcp);
+      wiz_sock_disconnect(sn);
       break;
     case SOCK_CLOSED:
-      wiz_socket(socket_tcp, Sn_MR_TCP, 5000, 0x00);
+      wiz_socket(sn, Sn_MR_TCP, 5000, 0x00);
       break;
     case SOCK_INIT:
       KPrintf("[SOCKET CLIENT] sock init.\n");
-      wiz_sock_connect(socket_tcp, dst_ip, dst_port);
+      wiz_sock_connect(sn, dst_ip, dst_port);
       break;
     case SOCK_ESTABLISHED:
-      if (getSn_IR(socket_tcp) & Sn_IR_CON) {
-        printf("[SOCKET CLIENT] %d:Connected\r\n", socket_tcp);
-        setSn_IR(socket_tcp, Sn_IR_CON);
+      if (getSn_IR(sn) & Sn_IR_CON) {
+        printf("[SOCKET CLIENT] %d:Connected\r\n", sn);
+        setSn_IR(sn, Sn_IR_CON);
       }
       if (opt == SEND_DATA) {
         uint32_t sent_size = 0;
-        ret = wiz_sock_send(socket_tcp, buf, buf_size);
+        ret = wiz_sock_send(sn, buf, buf_size);
         if (ret < 0) {
-          wiz_sock_close(socket_tcp);
+          wiz_sock_close(sn);
           return ret;
         }
       } else if (opt == RECV_DATA) {
@@ -348,9 +347,9 @@ int32_t wiz_server_op(uint8_t sn, uint8_t *buf, uint32_t buf_size,
       }
       if (opt == SEND_DATA) {
         uint32_t sent_size = 0;
-        ret = wiz_sock_send(socket_tcp, buf, buf_size);
+        ret = wiz_sock_send(sn, buf, buf_size);
         if (ret < 0) {
-          wiz_sock_close(socket_tcp);
+          wiz_sock_close(sn);
           return ret;
         }
       } else if (opt == RECV_DATA) {