diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index fc95e9335c..4c3fb065b4 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -486,6 +486,10 @@ static int32_t taosAddClientCfg(SConfig *pCfg) {
 
   tsNumOfTaskQueueThreads = tsNumOfCores / 2;
   tsNumOfTaskQueueThreads = TMAX(tsNumOfTaskQueueThreads, 4);
+
+    if (tsNumOfTaskQueueThreads >= 50) {
+    tsNumOfTaskQueueThreads = 50;
+  }
   if (cfgAddInt32(pCfg, "numOfTaskQueueThreads", tsNumOfTaskQueueThreads, 4, 1024, CFG_SCOPE_CLIENT) != 0) return -1;
 
   return 0;
@@ -1798,4 +1802,4 @@ void taosSetAllDebugFlag(int32_t flag, bool rewrite) {
   uInfo("all debug flag are set to %d", flag);
 }
 
-int8_t taosGranted() { return atomic_load_8(&tsGrant); }
+int8_t taosGranted() { return atomic_load_8(&tsGrant); }
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