diff --git a/source/libs/transport/src/transCli.c b/source/libs/transport/src/transCli.c
index b156d9b5dddb42af0c28dd3b799bad684dcaef42..be34cb6c8b1cb103643c1440937251fd976fd434 100644
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@@ -736,7 +736,7 @@ static void addConnToPool(void* pool, SCliConn* conn) {
   QUEUE_PUSH(&conn->list->conns, &conn->q);
   conn->list->size += 1;
 
-  if (conn->list->size >= 250) {
+  if (conn->list->size >= 20) {
     STaskArg* arg = taosMemoryCalloc(1, sizeof(STaskArg));
     arg->param1 = conn;
     arg->param2 = thrd;