diff --git a/Ubiquitous/XiZi_AIoT/services/net/net_server/api/sockets.c b/Ubiquitous/XiZi_AIoT/services/net/net_server/api/sockets.c
index 5f458d8f0..597be55fe 100644
--- a/Ubiquitous/XiZi_AIoT/services/net/net_server/api/sockets.c
+++ b/Ubiquitous/XiZi_AIoT/services/net/net_server/api/sockets.c
@@ -64,7 +64,7 @@
 #endif
 
 #include <string.h>
-
+#include "libserial.h"
 #ifdef LWIP_HOOK_FILENAME
 #include LWIP_HOOK_FILENAME
 #endif
@@ -640,7 +640,7 @@ lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d)...\n", s));
   sock = get_socket(s);
   if (!sock) {
-      KPrintf("sock = get_socket(s);\n");
+      printf("sock = get_socket(s);\n");
       return -1;
   }
 
@@ -656,7 +656,7 @@ lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
       sock_set_errno(sock, err_to_errno(err));
     }
     done_socket(sock);
-    KPrintf("err = netconn_accept(sock->conn, &newconn);\n");
+    printf("err = netconn_accept(sock->conn, &newconn);\n");
     return -1;
   }
   LWIP_ASSERT("newconn != NULL", newconn != NULL);
@@ -666,7 +666,7 @@ lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
     netconn_delete(newconn);
     sock_set_errno(sock, ENFILE);
     done_socket(sock);
-    KPrintf("newsock = alloc_socket(newconn, 1);\n");
+    printf("newsock = alloc_socket(newconn, 1);\n");
     return -1;
   }
   LWIP_ASSERT("invalid socket index", (newsock >= LWIP_SOCKET_OFFSET) && (newsock < NUM_SOCKETS + LWIP_SOCKET_OFFSET));
@@ -704,7 +704,7 @@ lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
       free_socket(nsock, 1);
       sock_set_errno(sock, err_to_errno(err));
       done_socket(sock);
-      KPrintf("err = netconn_peer(newconn, &naddr, &port);\n");
+      printf("err = netconn_peer(newconn, &naddr, &port);\n");
       return -1;
     }
 
@@ -1246,7 +1246,7 @@ lwip_recvfrom(int s, void *mem, size_t len, int flags,
     if (err != ERR_OK) {
       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom[UDP/RAW](%d): buf == NULL, error is \"%s\"!\n",
                                   s, lwip_strerr(err)));
-      KPrintf("lwip_recvfrom[UDP/RAW](%d): buf == NULL, error is \"%s\"!\n",
+      printf("lwip_recvfrom[UDP/RAW](%d): buf == NULL, error is \"%s\"!\n",
           s, lwip_strerr(err));
       sock_set_errno(sock, err_to_errno(err));
       done_socket(sock);
diff --git a/Ubiquitous/XiZi_AIoT/services/net/net_server/arch/lwipopts.h b/Ubiquitous/XiZi_AIoT/services/net/net_server/arch/lwipopts.h
index dc89a7c72..ce3be76ac 100644
--- a/Ubiquitous/XiZi_AIoT/services/net/net_server/arch/lwipopts.h
+++ b/Ubiquitous/XiZi_AIoT/services/net/net_server/arch/lwipopts.h
@@ -200,7 +200,7 @@
  /**
  * LWIP_SOCKET==1: Enable Socket API (require to use sockets.c)
  */
- #define LWIP_SOCKET                     0
+ #define LWIP_SOCKET                     1
 
  /*
      ---------------------------------
diff --git a/Ubiquitous/XiZi_AIoT/services/net/net_server/include/lwip/sockets.h b/Ubiquitous/XiZi_AIoT/services/net/net_server/include/lwip/sockets.h
index 2edab7be8..8b267bea0 100644
--- a/Ubiquitous/XiZi_AIoT/services/net/net_server/include/lwip/sockets.h
+++ b/Ubiquitous/XiZi_AIoT/services/net/net_server/include/lwip/sockets.h
@@ -520,13 +520,20 @@ struct pollfd
 #define LWIP_TIMEVAL_PRIVATE 1
 #endif
 
-#if defined(LWIP_TIMEVAL_PRIVATE) && defined(LIB_MUSLLIB)
+#if defined(LWIP_TIMEVAL_PRIVATE)
 struct timeval {
   long    tv_sec;         /* seconds */
   long    tv_usec;        /* and microseconds */
 };
 #endif /* LWIP_TIMEVAL_PRIVATE */
 
+// #if defined(LWIP_TIMEVAL_PRIVATE) && defined(LIB_MUSLLIB)
+// struct timeval {
+//   long    tv_sec;         /* seconds */
+//   long    tv_usec;        /* and microseconds */
+// };
+// #endif /* LWIP_TIMEVAL_PRIVATE */
+
 #define lwip_socket_init() /* Compatibility define, no init needed. */
 void lwip_socket_thread_init(void); /* LWIP_NETCONN_SEM_PER_THREAD==1: initialize thread-local semaphore */
 void lwip_socket_thread_cleanup(void); /* LWIP_NETCONN_SEM_PER_THREAD==1: destroy thread-local semaphore */