diff --git a/source/libs/transport/src/transCli.c b/source/libs/transport/src/transCli.c
index a18e3ad1aab4f62de363f1b3e1332e62a0203924..46658e935283b754677eeab4fff17fc184ed6681 100644
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@@ -389,6 +389,7 @@ static void addConnToPool(void* pool, SCliConn* conn) {
   conn->status = ConnNormal;
   // list already create before
   assert(plist != NULL);
+  taosArrayClear(conn->cliMsgs);
   QUEUE_PUSH(&plist->conn, &conn->conn);
   assert(!QUEUE_IS_EMPTY(&plist->conn));
 }