diff --git a/source/libs/sync/src/syncAppendEntriesReply.c b/source/libs/sync/src/syncAppendEntriesReply.c
index 16739647b5..ede4dc07e1 100644
--- a/source/libs/sync/src/syncAppendEntriesReply.c
+++ b/source/libs/sync/src/syncAppendEntriesReply.c
@@ -91,6 +91,7 @@ int32_t syncNodeOnAppendEntriesReply(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
 
           taosThreadMutexLock(&ths->arbTokenMutex);
           syncUtilGenerateArbToken(ths->myNodeInfo.nodeId, ths->vgId, ths->arbToken);
+          sInfo("vgId:%d, assigned leader to leader, arbToken:%s", ths->vgId, ths->arbToken);
           taosThreadMutexUnlock(&ths->arbTokenMutex);
         }
       } else {
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 2a9b05e354..db3aec5f2a 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -304,6 +304,10 @@ int32_t syncBecomeAssignedLeader(SSyncNode* ths, SRpcMsg* pRpcMsg) {
       syncNodeBecomeAssignedLeader(ths);
     }
     errcode = TSDB_CODE_SUCCESS;
+  } else {
+    sInfo("vgId:%d, skip to set assigned leader, token mismatch, local:%s, msg:%s", ths->vgId, ths->arbToken,
+          req.memberToken);
+    goto _OVER;
   }
 
   SVArbSetAssignedLeaderRsp rsp = {0};
@@ -1056,6 +1060,7 @@ SSyncNode* syncNodeOpen(SSyncInfo* pSyncInfo, int32_t vnodeVersion) {
   pSyncNode->arbTerm = -1;
   taosThreadMutexInit(&pSyncNode->arbTokenMutex, NULL);
   syncUtilGenerateArbToken(pSyncNode->myNodeInfo.nodeId, pSyncInfo->vgId, pSyncNode->arbToken);
+  sInfo("vgId:%d, arb token:%s", pSyncNode->vgId, pSyncNode->arbToken);
 
   // init peersNum, peers, peersId
   pSyncNode->peersNum = pSyncNode->raftCfg.cfg.totalReplicaNum - 1;