diff --git a/source/libs/transport/src/transCli.c b/source/libs/transport/src/transCli.c
index c32247784292e6e01f40b20a95754dd2c966a9eb..99ec46ff7700c8b61780f345aefa285d348423a3 100644
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@@ -635,12 +635,12 @@ static SCliConn* getConnFromPool2(SCliThrd* pThrd, char* key, SCliMsg** pMsg) {
     plist->list = nList;
   }
 
+  STraceId* trace = &(*pMsg)->msg.info.traceId;
   // no avaliable conn in pool
   if (QUEUE_IS_EMPTY(&plist->conns)) {
     SMsgList* list = plist->list;
     if ((list)->numOfConn >= pTransInst->connLimitNum) {
       STraceId* trace = &(*pMsg)->msg.info.traceId;
-
       STaskArg* arg = taosMemoryMalloc(sizeof(STaskArg));
       arg->param1 = *pMsg;
       arg->param2 = pThrd;
@@ -657,6 +657,8 @@ static SCliConn* getConnFromPool2(SCliThrd* pThrd, char* key, SCliMsg** pMsg) {
         arg->param1 = *pMsg;
         arg->param2 = pThrd;
         (*pMsg)->ctx->task = transDQSched(pThrd->waitConnQueue, doFreeTimeoutMsg, arg, pTransInst->timeToGetConn);
+        tGTrace("%s msg %s delay to send, wait for avaiable connect", pTransInst->label,
+                TMSG_INFO((*pMsg)->msg.msgType));
 
         QUEUE_PUSH(&(list)->msgQ, &(*pMsg)->q);
         queue* h = QUEUE_HEAD(&(list)->msgQ);
@@ -664,6 +666,9 @@ static SCliConn* getConnFromPool2(SCliThrd* pThrd, char* key, SCliMsg** pMsg) {
         SCliMsg* ans = QUEUE_DATA(h, SCliMsg, q);
 
         *pMsg = ans;
+
+        trace = &(*pMsg)->msg.info.traceId;
+        tGTrace("%s msg %s pop from delay queue, start to send", pTransInst->label, TMSG_INFO((*pMsg)->msg.msgType));
         transDQCancel(pThrd->waitConnQueue, ans->ctx->task);
       }
       list->numOfConn++;
@@ -860,6 +865,7 @@ static void cliDestroyConn(SCliConn* conn, bool clear) {
   if (conn->list != NULL) {
     SConnList* connList = conn->list;
     connList->list->numOfConn--;
+    connList->size--;
   } else {
     SConnList* connList = taosHashGet((SHashObj*)pThrd->pool, conn->ip, strlen(conn->ip));
     connList->list->numOfConn--;