diff --git a/source/libs/transport/src/transCli.c b/source/libs/transport/src/transCli.c
index b7bc428901..0932241abf 100644
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@@ -30,6 +30,7 @@ typedef struct SCliConn {
   void*        hostThrd;
   SConnBuffer  readBuf;
   void*        data;
+  SArray*      cliMsgs;
   queue        conn;
   uint64_t     expireTime;
   int          hThrdIdx;
@@ -106,6 +107,7 @@ static void cliAsyncCb(uv_async_t* handle);
 static SCliConn* cliCreateConn(SCliThrdObj* thrd);
 static void      cliDestroyConn(SCliConn* pConn, bool clear /*clear tcp handle or not*/);
 static void      cliDestroy(uv_handle_t* handle);
+static void      cliSend(SCliConn* pConn);
 
 // process data read from server, add decompress etc later
 static void cliHandleResp(SCliConn* conn);
@@ -158,6 +160,14 @@ static void         destroyThrdObj(SCliThrdObj* pThrd);
 
 static void* cliWorkThread(void* arg);
 
+bool cliMayContinueSendMsg(SCliConn* conn) {
+  if (taosArrayGetSize(conn->cliMsgs) > 0) {
+    cliSend(conn);
+    return true;
+  } else {
+    return false;
+  }
+}
 void cliHandleResp(SCliConn* conn) {
   SCliThrdObj* pThrd = conn->hostThrd;
   STrans*      pTransInst = pThrd->pTransInst;
@@ -173,18 +183,18 @@ void cliHandleResp(SCliConn* conn) {
   transMsg.msgType = pHead->msgType;
   transMsg.ahandle = NULL;
 
-  SCliMsg*       pMsg = conn->data;
+  SCliMsg* pMsg = NULL;
+  if (taosArrayGetSize(conn->cliMsgs) > 0) {
+    pMsg = taosArrayGetP(conn->cliMsgs, 0);
+    taosArrayRemove(conn->cliMsgs, 0);
+  }
+
   STransConnCtx* pCtx = pMsg ? pMsg->ctx : NULL;
   if (pMsg == NULL && !CONN_NO_PERSIST_BY_APP(conn)) {
     transMsg.ahandle = pTransInst->mfp ? (*pTransInst->mfp)(pTransInst->parent, transMsg.msgType) : NULL;
   } else {
     transMsg.ahandle = pCtx ? pCtx->ahandle : NULL;
   }
-  // if (rpcMsg.ahandle == NULL) {
-  //  tDebug("%s cli conn %p handle except", CONN_GET_INST_LABEL(conn), conn);
-  //  return;
-  //}
-
   // buf's mem alread translated to transMsg.pCont
   transClearBuffer(&conn->readBuf);
 
@@ -214,12 +224,15 @@ void cliHandleResp(SCliConn* conn) {
     memcpy((char*)pCtx->pRsp, (char*)&transMsg, sizeof(transMsg));
     tsem_post(pCtx->pSem);
   }
+  destroyCmsg(pMsg);
+
+  if (cliMayContinueSendMsg(conn) == true) {
+    return;
+  }
 
   if (CONN_NO_PERSIST_BY_APP(conn)) {
     addConnToPool(pThrd->pool, conn);
   }
-  destroyCmsg(conn->data);
-  conn->data = NULL;
 
   uv_read_start((uv_stream_t*)conn->stream, cliAllocRecvBufferCb, cliRecvCb);
   // start thread's timer of conn pool if not active
@@ -229,7 +242,7 @@ void cliHandleResp(SCliConn* conn) {
 }
 
 void cliHandleExcept(SCliConn* pConn) {
-  if (pConn->data == NULL) {
+  if (taosArrayGetSize(pConn->cliMsgs) == 0) {
     if (pConn->broken == true || CONN_NO_PERSIST_BY_APP(pConn)) {
       transUnrefCliHandle(pConn);
       return;
@@ -238,32 +251,38 @@ void cliHandleExcept(SCliConn* pConn) {
   SCliThrdObj* pThrd = pConn->hostThrd;
   STrans*      pTransInst = pThrd->pTransInst;
 
-  SCliMsg*       pMsg = pConn->data;
-  STransConnCtx* pCtx = pMsg ? pMsg->ctx : NULL;
+  do {
+    SCliMsg* pMsg = NULL;
+    if (taosArrayGetSize(pConn->cliMsgs) > 0) {
+      pMsg = taosArrayGetP(pConn->cliMsgs, 0);
+      taosArrayRemove(pConn->cliMsgs, 0);
+    }
 
-  STransMsg transMsg = {0};
-  transMsg.code = TSDB_CODE_RPC_NETWORK_UNAVAIL;
-  transMsg.msgType = pMsg ? pMsg->msg.msgType + 1 : 0;
-  transMsg.ahandle = NULL;
+    STransConnCtx* pCtx = pMsg ? pMsg->ctx : NULL;
 
-  if (pMsg == NULL && !CONN_NO_PERSIST_BY_APP(pConn)) {
-    transMsg.ahandle = pTransInst->mfp ? (*pTransInst->mfp)(pTransInst->parent, transMsg.msgType) : NULL;
-  } else {
-    transMsg.ahandle = pCtx ? pCtx->ahandle : NULL;
-  }
+    STransMsg transMsg = {0};
+    transMsg.code = TSDB_CODE_RPC_NETWORK_UNAVAIL;
+    transMsg.msgType = pMsg ? pMsg->msg.msgType + 1 : 0;
+    transMsg.ahandle = NULL;
 
-  if (pCtx == NULL || pCtx->pSem == NULL) {
-    tTrace("%s cli conn %p handle resp", pTransInst->label, pConn);
-    (pTransInst->cfp)(pTransInst->parent, &transMsg, NULL);
-  } else {
-    tTrace("%s cli conn(sync) %p handle resp", pTransInst->label, pConn);
-    memcpy((char*)(pCtx->pRsp), (char*)(&transMsg), sizeof(transMsg));
-    tsem_post(pCtx->pSem);
-  }
-  destroyCmsg(pConn->data);
-  pConn->data = NULL;
+    if (pMsg == NULL && !CONN_NO_PERSIST_BY_APP(pConn)) {
+      transMsg.ahandle = pTransInst->mfp ? (*pTransInst->mfp)(pTransInst->parent, transMsg.msgType) : NULL;
+    } else {
+      transMsg.ahandle = pCtx ? pCtx->ahandle : NULL;
+    }
+
+    if (pCtx == NULL || pCtx->pSem == NULL) {
+      tTrace("%s cli conn %p handle resp", pTransInst->label, pConn);
+      (pTransInst->cfp)(pTransInst->parent, &transMsg, NULL);
+    } else {
+      tTrace("%s cli conn(sync) %p handle resp", pTransInst->label, pConn);
+      memcpy((char*)(pCtx->pRsp), (char*)(&transMsg), sizeof(transMsg));
+      tsem_post(pCtx->pSem);
+    }
+    destroyCmsg(pMsg);
+    tTrace("%s cli conn %p start to destroy", CONN_GET_INST_LABEL(pConn), pConn);
+  } while (taosArrayGetSize(pConn->cliMsgs) > 0);
 
-  tTrace("%s cli conn %p start to destroy", CONN_GET_INST_LABEL(pConn), pConn);
   transUnrefCliHandle(pConn);
 }
 
@@ -398,6 +417,7 @@ static SCliConn* cliCreateConn(SCliThrdObj* pThrd) {
 
   conn->writeReq.data = conn;
   conn->connReq.data = conn;
+  conn->cliMsgs = taosArrayInit(2, sizeof(void*));
 
   QUEUE_INIT(&conn->conn);
   conn->hostThrd = pThrd;
@@ -417,6 +437,7 @@ static void cliDestroy(uv_handle_t* handle) {
   SCliConn* conn = handle->data;
   free(conn->ip);
   free(conn->stream);
+  taosArrayDestroy(conn->cliMsgs);
   tTrace("%s cli conn %p destroy successfully", CONN_GET_INST_LABEL(conn), conn);
   free(conn);
 }
@@ -426,11 +447,6 @@ static void cliSendCb(uv_write_t* req, int status) {
 
   if (status == 0) {
     tTrace("%s cli conn %p data already was written out", CONN_GET_INST_LABEL(pConn), pConn);
-    SCliMsg* pMsg = pConn->data;
-    if (pMsg == NULL) {
-      return;
-    }
-    destroyUserdata(&pMsg->msg);
   } else {
     tError("%s cli conn %p failed to write: %s", CONN_GET_INST_LABEL(pConn), pConn, uv_err_name(status));
     cliHandleExcept(pConn);
@@ -442,7 +458,8 @@ static void cliSendCb(uv_write_t* req, int status) {
 void cliSend(SCliConn* pConn) {
   CONN_HANDLE_BROKEN(pConn);
 
-  SCliMsg*       pCliMsg = pConn->data;
+  assert(taosArrayGetSize(pConn->cliMsgs) > 0);
+  SCliMsg*       pCliMsg = taosArrayGetP(pConn->cliMsgs, 0);
   STransConnCtx* pCtx = pCliMsg->ctx;
 
   SCliThrdObj* pThrd = pConn->hostThrd;
@@ -480,6 +497,7 @@ void cliSend(SCliConn* pConn) {
          TMSG_INFO(pHead->msgType), inet_ntoa(pConn->addr.sin_addr), ntohs(pConn->addr.sin_port),
          inet_ntoa(pConn->locaddr.sin_addr), ntohs(pConn->locaddr.sin_port));
 
+  pConn->writeReq.data = pConn;
   uv_write(&pConn->writeReq, (uv_stream_t*)pConn->stream, &wb, 1, cliSendCb);
 
   return;
@@ -502,8 +520,8 @@ void cliConnCb(uv_connect_t* req, int status) {
   uv_tcp_getsockname((uv_tcp_t*)pConn->stream, (struct sockaddr*)&pConn->locaddr, &addrlen);
 
   tTrace("%s cli conn %p connect to server successfully", CONN_GET_INST_LABEL(pConn), pConn);
-
   assert(pConn->stream == req->handle);
+
   cliSend(pConn);
 }
 
@@ -521,8 +539,11 @@ static void cliHandleRelease(SCliMsg* pMsg, SCliThrdObj* pThrd) {
   SCliConn* conn = pMsg->msg.handle;
   tDebug("%s cli conn %p release to inst", CONN_GET_INST_LABEL(conn), conn);
 
-  destroyCmsg(pMsg);
-  conn->data = NULL;
+  while (taosArrayGetSize(conn->cliMsgs) > 0) {
+    SCliMsg* pMsg = taosArrayGetP(conn->cliMsgs, 0);
+    destroyCmsg(pMsg);
+    taosArrayRemove(conn->cliMsgs, 0);
+  }
 
   transDestroyBuffer(&conn->readBuf);
   if (conn->persist && T_REF_VAL_GET(conn) >= 2) {
@@ -561,14 +582,14 @@ void cliHandleReq(SCliMsg* pMsg, SCliThrdObj* pThrd) {
 
   SCliConn* conn = cliGetConn(pMsg, pThrd);
   if (conn != NULL) {
-    conn->data = pMsg;
+    taosArrayPush(conn->cliMsgs, &pMsg);
     conn->hThrdIdx = pCtx->hThrdIdx;
-
     transDestroyBuffer(&conn->readBuf);
     cliSend(conn);
   } else {
     conn = cliCreateConn(pThrd);
-    conn->data = pMsg;
+    taosArrayPush(conn->cliMsgs, &pMsg);
+
     conn->hThrdIdx = pCtx->hThrdIdx;
     conn->ip = strdup(pMsg->ctx->ip);
     conn->port = pMsg->ctx->port;