diff --git a/source/client/src/clientMain.c b/source/client/src/clientMain.c
index 62052457fd61d8e0f408ef9c0d5cb0b5c6cc702d..b4c2615f703feb83096fad0b5b234337c2cf82d7 100644
--- a/source/client/src/clientMain.c
+++ b/source/client/src/clientMain.c
@@ -142,6 +142,7 @@ void taos_close(TAOS *taos) {
 
 int taos_errno(TAOS_RES *res) {
   if (res == NULL || TD_RES_TMQ_META(res)) {
+    if (terrno == TSDB_CODE_RPC_REDIRECT) errno = TSDB_CODE_RPC_NETWORK_UNAVAIL;
     return terrno;
   }
 
@@ -149,11 +150,13 @@ int taos_errno(TAOS_RES *res) {
     return 0;
   }
 
+  if (pRequest->code == TSDB_CODE_RPC_REDIRECT) pRequest->code = TSDB_CODE_RPC_NETWORK_UNAVAIL;
   return ((SRequestObj *)res)->code;
 }
 
 const char *taos_errstr(TAOS_RES *res) {
   if (res == NULL || TD_RES_TMQ_META(res)) {
+    if (terrno == TSDB_CODE_RPC_REDIRECT) errno = TSDB_CODE_RPC_NETWORK_UNAVAIL;
     return (const char *)tstrerror(terrno);
   }
 
@@ -165,6 +168,7 @@ const char *taos_errstr(TAOS_RES *res) {
   if (NULL != pRequest->msgBuf && (strlen(pRequest->msgBuf) > 0 || pRequest->code == TSDB_CODE_RPC_FQDN_ERROR)) {
     return pRequest->msgBuf;
   } else {
+    if (pRequest->code == TSDB_CODE_RPC_REDIRECT) pRequest->code = TSDB_CODE_RPC_NETWORK_UNAVAIL;
     return (const char *)tstrerror(pRequest->code);
   }
 }