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 059c5de41..9dc06a7ba 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
@@ -331,13 +331,12 @@ void wiz_client_op_test(int argc, char *argv[]) {
   memset(recv_buf, '\0', g_wiznet_buf_size);
   memcpy(send_buf, argv[3], strlen(argv[3]));
   KPrintf("[W5500 Client] BUFFER: %s\n", send_buf);
+  int ret = wiz_client_op(client_sock, send_buf, g_wiznet_buf_size, ip, port,
+                          SEND_DATA);
+  if (ret < 0) {
+    KPrintf("[W5500] Client Op Failed.\n");
+  }
   while (1) {
-    int ret = wiz_client_op(client_sock, send_buf, g_wiznet_buf_size, ip, port,
-                            SEND_DATA);
-    if (ret < 0) {
-      KPrintf("[W5500] Client Op Failed.\n");
-    }
-    MdelayKTask(200);
     // waiting for a responding.
     ret = wiz_client_op(client_sock, recv_buf, g_wiznet_buf_size, ip, port,
                         RECV_DATA);