diff --git a/source/dnode/mnode/impl/src/mndQnode.c b/source/dnode/mnode/impl/src/mndQnode.c
index a7d8c81d3f..2f4ad69e2a 100644
--- a/source/dnode/mnode/impl/src/mndQnode.c
+++ b/source/dnode/mnode/impl/src/mndQnode.c
@@ -257,6 +257,7 @@ static int32_t mndCreateQnode(SMnode *pMnode, SRpcMsg *pReq, SDnodeObj *pDnode,
 
   STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_ROLLBACK, TRN_CONFLICT_NOTHING, pReq, "create-qnode");
   if (pTrans == NULL) goto _OVER;
+  mndTransSetSerial(pTrans);
 
   mInfo("trans:%d, used to create qnode:%d", pTrans->id, pCreate->dnodeId);
   if (mndSetCreateQnodeRedoLogs(pTrans, &qnodeObj) != 0) goto _OVER;
@@ -380,6 +381,7 @@ static int32_t mndDropQnode(SMnode *pMnode, SRpcMsg *pReq, SQnodeObj *pObj) {
 
   STrans *pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_CONFLICT_NOTHING, pReq, "drop-qnode");
   if (pTrans == NULL) goto _OVER;
+  mndTransSetSerial(pTrans);
 
   mInfo("trans:%d, used to drop qnode:%d", pTrans->id, pObj->id);
   if (mndSetDropQnodeInfoToTrans(pMnode, pTrans, pObj, false) != 0) goto _OVER;