diff --git a/include/libs/sync/sync.h b/include/libs/sync/sync.h
index 53fad4607a..d6fdadc1fb 100644
--- a/include/libs/sync/sync.h
+++ b/include/libs/sync/sync.h
@@ -138,6 +138,8 @@ typedef struct SSyncInfo {
 
   void* rpcClient;
   int32_t (*FpSendMsg)(void* rpcClient, const SEpSet* pEpSet, SRpcMsg* pMsg);
+  void* queue;
+  int32_t (*FpEqMsg)(void* queue, SRpcMsg* pMsg);
 
 } SSyncInfo;
 
@@ -147,13 +149,10 @@ typedef struct SSyncNode SSyncNode;
 int32_t syncInit();
 void    syncCleanUp();
 
-int64_t syncStart(const SSyncInfo* pSyncInfo);
-void    syncStop(int64_t rid);
-int32_t syncReconfig(int64_t rid, const SSyncCfg* pSyncCfg);
-
-int32_t syncForwardToPeer(int64_t rid, const SRpcMsg* pBuf, bool isWeak);
-// int32_t syncForwardToPeer(int64_t rid, const SSyncBuffer* pBuf, bool isWeak);
-
+int64_t    syncStart(const SSyncInfo* pSyncInfo);
+void       syncStop(int64_t rid);
+int32_t    syncReconfig(int64_t rid, const SSyncCfg* pSyncCfg);
+int32_t    syncForwardToPeer(int64_t rid, const SRpcMsg* pBuf, bool isWeak);
 ESyncState syncGetMyRole(int64_t rid);
 void       syncGetNodesRole(int64_t rid, SNodesRole* pNodeRole);
 
diff --git a/source/libs/sync/inc/syncElection.h b/source/libs/sync/inc/syncElection.h
index 7e9e637854..ed5b86fa98 100644
--- a/source/libs/sync/inc/syncElection.h
+++ b/source/libs/sync/inc/syncElection.h
@@ -26,6 +26,9 @@ extern "C" {
 #include "syncInt.h"
 #include "taosdef.h"
 
+void syncNodeElect(SSyncNode* pSyncNode);
+void syncNodeRequestVotePeers(SSyncNode* pSyncNode);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/libs/sync/inc/syncIO.h b/source/libs/sync/inc/syncIO.h
index 238948b403..40fa31d969 100644
--- a/source/libs/sync/inc/syncIO.h
+++ b/source/libs/sync/inc/syncIO.h
@@ -58,9 +58,10 @@ extern SSyncIO *gSyncIO;
 
 int32_t syncIOStart(char *host, uint16_t port);
 int32_t syncIOStop();
-int32_t syncIOSendMsg(void *clientRpc, const SEpSet *pEpSet, SRpcMsg *pMsg);
 int32_t syncIOTickQ();
 int32_t syncIOTickPing();
+int32_t syncIOSendMsg(void *clientRpc, const SEpSet *pEpSet, SRpcMsg *pMsg);
+int32_t syncIOEqMsg(void *queue, SRpcMsg *pMsg);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/sync/inc/syncInt.h b/source/libs/sync/inc/syncInt.h
index aedb9662b1..8268624501 100644
--- a/source/libs/sync/inc/syncInt.h
+++ b/source/libs/sync/inc/syncInt.h
@@ -113,6 +113,8 @@ typedef struct SSyncNode {
   char        path[TSDB_FILENAME_LEN];
   void*       rpcClient;
   int32_t (*FpSendMsg)(void* rpcClient, const SEpSet* pEpSet, SRpcMsg* pMsg);
+  void* queue;
+  int32_t (*FpEqMsg)(void* queue, SRpcMsg* pMsg);
 
   // init internal
   SNodeInfo me;
@@ -149,19 +151,19 @@ typedef struct SSyncNode {
   // timer
   tmr_h             pPingTimer;
   int32_t           pingTimerMS;
-  uint8_t           pingTimerStart;
+  uint8_t           pingTimerEnable;
   TAOS_TMR_CALLBACK FpPingTimer;  // Timer Fp
   uint64_t          pingTimerCounter;
 
   tmr_h             pElectTimer;
   int32_t           electTimerMS;
-  uint8_t           electTimerStart;
+  uint8_t           electTimerEnable;
   TAOS_TMR_CALLBACK FpElectTimer;  // Timer Fp
   uint64_t          electTimerCounter;
 
   tmr_h             pHeartbeatTimer;
   int32_t           heartbeatTimerMS;
-  uint8_t           heartbeatTimerStart;
+  uint8_t           heartbeatTimerEnable;
   TAOS_TMR_CALLBACK FpHeartbeatTimer;  // Timer Fp
   uint64_t          heartbeatTimerCounter;
 
@@ -180,8 +182,24 @@ void       syncNodeClose(SSyncNode* pSyncNode);
 void       syncNodePingAll(SSyncNode* pSyncNode);
 void       syncNodePingPeers(SSyncNode* pSyncNode);
 void       syncNodePingSelf(SSyncNode* pSyncNode);
-int32_t    syncNodeStartPingTimer(SSyncNode* pSyncNode);
-int32_t    syncNodeStopPingTimer(SSyncNode* pSyncNode);
+
+int32_t syncNodeStartPingTimer(SSyncNode* pSyncNode);
+int32_t syncNodeStopPingTimer(SSyncNode* pSyncNode);
+
+int32_t syncNodeStartElectTimer(SSyncNode* pSyncNode);
+int32_t syncNodeStopElectTimer(SSyncNode* pSyncNode);
+int32_t syncNodeResetElectTimer(SSyncNode* pSyncNode, int32_t ms);
+
+int32_t syncNodeStartHeartbeatTimer(SSyncNode* pSyncNode);
+int32_t syncNodeStopHeartbeatTimer(SSyncNode* pSyncNode);
+int32_t syncNodeResetHeartbeatTimer(SSyncNode* pSyncNode, int32_t ms);
+
+void syncNodeBecomeFollower(SSyncNode* pSyncNode);
+void syncNodeBecomeLeader(SSyncNode* pSyncNode);
+void syncNodeFollower2Candidate(SSyncNode* pSyncNode);
+void syncNodeCandidate2Leader(SSyncNode* pSyncNode);
+void syncNodeLeader2Follower(SSyncNode* pSyncNode);
+void syncNodeCandidate2Follower(SSyncNode* pSyncNode);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/sync/inc/syncMessage.h b/source/libs/sync/inc/syncMessage.h
index 3057e23bc2..5aa27e616b 100644
--- a/source/libs/sync/inc/syncMessage.h
+++ b/source/libs/sync/inc/syncMessage.h
@@ -30,6 +30,7 @@ extern "C" {
 
 // encode as uint32
 typedef enum ESyncMessageType {
+  SYNC_UNKNOWN = 99,
   SYNC_PING = 101,
   SYNC_PING_REPLY = 103,
   SYNC_CLIENT_REQUEST = 105,
@@ -40,6 +41,10 @@ typedef enum ESyncMessageType {
   SYNC_APPEND_ENTRIES_REPLY = 115,
 } ESyncMessageType;
 
+// ---------------------------------------------
+cJSON* syncRpcMsg2Json(SRpcMsg* pRpcMsg);
+cJSON* syncRpcUnknownMsg2Json();
+
 // ---------------------------------------------
 typedef struct SyncPing {
   uint32_t bytes;
diff --git a/source/libs/sync/inc/syncReplication.h b/source/libs/sync/inc/syncReplication.h
index 7f97ae9e49..a9875d5cae 100644
--- a/source/libs/sync/inc/syncReplication.h
+++ b/source/libs/sync/inc/syncReplication.h
@@ -26,6 +26,8 @@ extern "C" {
 #include "syncInt.h"
 #include "taosdef.h"
 
+void syncNodeAppendEntriesPeers(SSyncNode* pSyncNode);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/libs/sync/src/syncElection.c b/source/libs/sync/src/syncElection.c
index 329105e2a1..433201b849 100644
--- a/source/libs/sync/src/syncElection.c
+++ b/source/libs/sync/src/syncElection.c
@@ -14,3 +14,7 @@
  */
 
 #include "syncElection.h"
+
+void syncNodeElect(SSyncNode* pSyncNode) {}
+
+void syncNodeRequestVotePeers(SSyncNode* pSyncNode) {}
\ No newline at end of file
diff --git a/source/libs/sync/src/syncIO.c b/source/libs/sync/src/syncIO.c
index 3ba145a96b..52cc0cda50 100644
--- a/source/libs/sync/src/syncIO.c
+++ b/source/libs/sync/src/syncIO.c
@@ -40,17 +40,6 @@ static void    syncIOTickPingFunc(void *param, void *tmrId);
 // ----------------------------
 
 // public function ------------
-int32_t syncIOSendMsg(void *clientRpc, const SEpSet *pEpSet, SRpcMsg *pMsg) {
-  sTrace(
-      "<--- syncIOSendMsg ---> clientRpc:%p, numOfEps:%d, inUse:%d, destAddr:%s-%u, pMsg->ahandle:%p, pMsg->handle:%p, "
-      "pMsg->msgType:%d, pMsg->contLen:%d",
-      clientRpc, pEpSet->numOfEps, pEpSet->inUse, pEpSet->eps[0].fqdn, pEpSet->eps[0].port, pMsg->ahandle, pMsg->handle,
-      pMsg->msgType, pMsg->contLen);
-  pMsg->handle = NULL;
-  rpcSendRequest(clientRpc, pEpSet, pMsg, NULL);
-  return 0;
-}
-
 int32_t syncIOStart(char *host, uint16_t port) {
   gSyncIO = syncIOCreate(host, port);
   assert(gSyncIO != NULL);
@@ -83,6 +72,35 @@ int32_t syncIOTickPing() {
   return ret;
 }
 
+int32_t syncIOSendMsg(void *clientRpc, const SEpSet *pEpSet, SRpcMsg *pMsg) {
+  sTrace(
+      "<--- syncIOSendMsg ---> clientRpc:%p, numOfEps:%d, inUse:%d, destAddr:%s-%u, pMsg->ahandle:%p, pMsg->handle:%p, "
+      "pMsg->msgType:%d, pMsg->contLen:%d",
+      clientRpc, pEpSet->numOfEps, pEpSet->inUse, pEpSet->eps[0].fqdn, pEpSet->eps[0].port, pMsg->ahandle, pMsg->handle,
+      pMsg->msgType, pMsg->contLen);
+  {
+    cJSON *pJson = syncRpcMsg2Json(pMsg);
+    char * serialized = cJSON_Print(pJson);
+    sTrace("process syncMessage send: pMsg:%s ", serialized);
+    free(serialized);
+    cJSON_Delete(pJson);
+  }
+  pMsg->handle = NULL;
+  rpcSendRequest(clientRpc, pEpSet, pMsg, NULL);
+  return 0;
+}
+
+int32_t syncIOEqMsg(void *queue, SRpcMsg *pMsg) {
+  SRpcMsg *pTemp;
+  pTemp = taosAllocateQitem(sizeof(SRpcMsg));
+  memcpy(pTemp, pMsg, sizeof(SRpcMsg));
+
+  STaosQueue *pMsgQ = queue;
+  taosWriteQitem(pMsgQ, pTemp);
+
+  return 0;
+}
+
 // local function ------------
 static int32_t syncIOStartInternal(SSyncIO *io) {
   taosBlockSIGPIPE();
@@ -215,6 +233,7 @@ static void *syncIOConsumerFunc(void *param) {
           syncPingFromRpcMsg(pRpcMsg, pSyncMsg);
           // memcpy(pSyncMsg, tmpRpcMsg.pCont, tmpRpcMsg.contLen);
           io->FpOnSyncPing(io->pSyncNode, pSyncMsg);
+          syncPingDestroy(pSyncMsg);
         }
 
       } else if (pRpcMsg->msgType == SYNC_PING_REPLY) {
@@ -223,6 +242,7 @@ static void *syncIOConsumerFunc(void *param) {
           pSyncMsg = syncPingReplyBuild(pRpcMsg->contLen);
           syncPingReplyFromRpcMsg(pRpcMsg, pSyncMsg);
           io->FpOnSyncPingReply(io->pSyncNode, pSyncMsg);
+          syncPingReplyDestroy(pSyncMsg);
         }
       } else {
         ;
diff --git a/source/libs/sync/src/syncMain.c b/source/libs/sync/src/syncMain.c
index 7e01e7e81c..4183bfbe9a 100644
--- a/source/libs/sync/src/syncMain.c
+++ b/source/libs/sync/src/syncMain.c
@@ -56,8 +56,6 @@ void syncStop(int64_t rid) {}
 
 int32_t syncReconfig(int64_t rid, const SSyncCfg* pSyncCfg) { return 0; }
 
-// int32_t syncForwardToPeer(int64_t rid, const SSyncBuffer* pBuf, bool isWeak) { return 0; }
-
 int32_t syncForwardToPeer(int64_t rid, const SRpcMsg* pBuf, bool isWeak) { return 0; }
 
 ESyncState syncGetMyRole(int64_t rid) { return TAOS_SYNC_STATE_LEADER; }
@@ -76,6 +74,8 @@ SSyncNode* syncNodeOpen(const SSyncInfo* pSyncInfo) {
 
   pSyncNode->rpcClient = pSyncInfo->rpcClient;
   pSyncNode->FpSendMsg = pSyncInfo->FpSendMsg;
+  pSyncNode->queue = pSyncInfo->queue;
+  pSyncNode->FpEqMsg = pSyncInfo->FpEqMsg;
 
   pSyncNode->me = pSyncInfo->syncCfg.nodeInfo[pSyncInfo->syncCfg.myIndex];
   pSyncNode->peersNum = pSyncInfo->syncCfg.replicaNum - 1;
@@ -93,7 +93,7 @@ SSyncNode* syncNodeOpen(const SSyncInfo* pSyncInfo) {
 
   pSyncNode->pPingTimer = NULL;
   pSyncNode->pingTimerMS = 1000;
-  atomic_store_8(&pSyncNode->pingTimerStart, 0);
+  atomic_store_8(&pSyncNode->pingTimerEnable, 0);
   pSyncNode->FpPingTimer = syncNodePingTimerCb;
   pSyncNode->pingTimerCounter = 0;
 
@@ -148,22 +148,76 @@ void syncNodePingSelf(SSyncNode* pSyncNode) {
 int32_t syncNodeStartPingTimer(SSyncNode* pSyncNode) {
   if (pSyncNode->pPingTimer == NULL) {
     pSyncNode->pPingTimer =
-        taosTmrStart(pSyncNode->FpPingTimer, pSyncNode->pingTimerCounter, pSyncNode, gSyncEnv->pTimerManager);
+        taosTmrStart(pSyncNode->FpPingTimer, pSyncNode->pingTimerMS, pSyncNode, gSyncEnv->pTimerManager);
   } else {
-    taosTmrReset(pSyncNode->FpPingTimer, pSyncNode->pingTimerCounter, pSyncNode, gSyncEnv->pTimerManager,
+    taosTmrReset(pSyncNode->FpPingTimer, pSyncNode->pingTimerMS, pSyncNode, gSyncEnv->pTimerManager,
                  &pSyncNode->pPingTimer);
   }
 
-  atomic_store_8(&pSyncNode->pingTimerStart, 1);
+  atomic_store_8(&pSyncNode->pingTimerEnable, 1);
   return 0;
 }
 
 int32_t syncNodeStopPingTimer(SSyncNode* pSyncNode) {
-  atomic_store_8(&pSyncNode->pingTimerStart, 0);
-  pSyncNode->pingTimerCounter = TIMER_MAX_MS;
+  atomic_store_8(&pSyncNode->pingTimerEnable, 0);
+  pSyncNode->pingTimerMS = TIMER_MAX_MS;
   return 0;
 }
 
+int32_t syncNodeStartElectTimer(SSyncNode* pSyncNode) {
+  if (pSyncNode->pElectTimer == NULL) {
+    pSyncNode->pElectTimer =
+        taosTmrStart(pSyncNode->FpElectTimer, pSyncNode->electTimerMS, pSyncNode, gSyncEnv->pTimerManager);
+  } else {
+    taosTmrReset(pSyncNode->FpElectTimer, pSyncNode->electTimerMS, pSyncNode, gSyncEnv->pTimerManager,
+                 &pSyncNode->pElectTimer);
+  }
+
+  atomic_store_8(&pSyncNode->electTimerEnable, 1);
+  return 0;
+}
+
+int32_t syncNodeStopElectTimer(SSyncNode* pSyncNode) {
+  atomic_store_8(&pSyncNode->electTimerEnable, 0);
+  pSyncNode->electTimerMS = TIMER_MAX_MS;
+  return 0;
+}
+
+int32_t syncNodeResetElectTimer(SSyncNode* pSyncNode, int32_t ms) { return 0; }
+
+int32_t syncNodeStartHeartbeatTimer(SSyncNode* pSyncNode) {
+  if (pSyncNode->pHeartbeatTimer == NULL) {
+    pSyncNode->pHeartbeatTimer =
+        taosTmrStart(pSyncNode->FpHeartbeatTimer, pSyncNode->heartbeatTimerMS, pSyncNode, gSyncEnv->pTimerManager);
+  } else {
+    taosTmrReset(pSyncNode->FpHeartbeatTimer, pSyncNode->heartbeatTimerMS, pSyncNode, gSyncEnv->pTimerManager,
+                 &pSyncNode->pHeartbeatTimer);
+  }
+
+  atomic_store_8(&pSyncNode->heartbeatTimerEnable, 1);
+  return 0;
+}
+
+int32_t syncNodeStopHeartbeatTimer(SSyncNode* pSyncNode) {
+  atomic_store_8(&pSyncNode->heartbeatTimerEnable, 0);
+  pSyncNode->heartbeatTimerMS = TIMER_MAX_MS;
+  return 0;
+}
+
+int32_t syncNodeResetHeartbeatTimer(SSyncNode* pSyncNode, int32_t ms) { return 0; }
+
+void syncNodeBecomeFollower(SSyncNode* pSyncNode) {}
+
+void syncNodeBecomeLeader(SSyncNode* pSyncNode) {}
+
+void syncNodeFollower2Candidate(SSyncNode* pSyncNode) {}
+
+void syncNodeCandidate2Leader(SSyncNode* pSyncNode) {}
+
+void syncNodeLeader2Follower(SSyncNode* pSyncNode) {}
+
+void syncNodeCandidate2Follower(SSyncNode* pSyncNode) {}
+
 // ------ local funciton ---------
 static int32_t syncNodePing(SSyncNode* pSyncNode, const SRaftId* destRaftId, SyncPing* pMsg) {
   sTrace("syncNodePing pSyncNode:%p ", pSyncNode);
@@ -204,7 +258,6 @@ static int32_t syncNodeAppendEntries(SSyncNode* ths, const SyncAppendEntries* pM
 }
 
 static int32_t syncNodeSendMsgById(const SRaftId* destRaftId, SSyncNode* pSyncNode, SRpcMsg* pMsg) {
-  sTrace("syncNodeSendMsgById pSyncNode:%p ", pSyncNode);
   SEpSet epSet;
   syncUtilraftId2EpSet(destRaftId, &epSet);
   pSyncNode->FpSendMsg(pSyncNode->rpcClient, &epSet, pMsg);
@@ -225,7 +278,7 @@ static int32_t syncNodeOnPingCb(SSyncNode* ths, SyncPing* pMsg) {
   {
     cJSON* pJson = syncPing2Json(pMsg);
     char*  serialized = cJSON_Print(pJson);
-    sTrace("syncNodeOnPingCb syncNodePing pMsg:%s ", serialized);
+    sTrace("process syncMessage recv: syncNodeOnPingCb pMsg:%s ", serialized);
     free(serialized);
     cJSON_Delete(pJson);
   }
@@ -245,7 +298,7 @@ static int32_t syncNodeOnPingReplyCb(SSyncNode* ths, SyncPingReply* pMsg) {
   {
     cJSON* pJson = syncPingReply2Json(pMsg);
     char*  serialized = cJSON_Print(pJson);
-    sTrace("syncNodeOnPingReplyCb syncNodePing pMsg:%s ", serialized);
+    sTrace("process syncMessage recv: syncNodeOnPingReplyCb pMsg:%s ", serialized);
     free(serialized);
     cJSON_Delete(pJson);
   }
@@ -275,7 +328,7 @@ static int32_t syncNodeOnAppendEntriesReplyCb(SSyncNode* ths, SyncAppendEntriesR
 
 static void syncNodePingTimerCb(void* param, void* tmrId) {
   SSyncNode* pSyncNode = (SSyncNode*)param;
-  if (atomic_load_8(&pSyncNode->pingTimerStart)) {
+  if (atomic_load_8(&pSyncNode->pingTimerEnable)) {
     ++(pSyncNode->pingTimerCounter);
     // pSyncNode->pingTimerMS += 100;
 
@@ -289,6 +342,6 @@ static void syncNodePingTimerCb(void* param, void* tmrId) {
     taosTmrReset(syncNodePingTimerCb, pSyncNode->pingTimerMS, pSyncNode, &gSyncEnv->pTimerManager,
                  &pSyncNode->pPingTimer);
   } else {
-    sTrace("syncNodePingTimerCb: pingTimerStart:%u ", pSyncNode->pingTimerStart);
+    sTrace("syncNodePingTimerCb: pingTimerEnable:%u ", pSyncNode->pingTimerEnable);
   }
 }
\ No newline at end of file
diff --git a/source/libs/sync/src/syncMessage.c b/source/libs/sync/src/syncMessage.c
index 4c44b4691c..4dbae9bcba 100644
--- a/source/libs/sync/src/syncMessage.c
+++ b/source/libs/sync/src/syncMessage.c
@@ -20,6 +20,59 @@
 
 void onMessage(SRaft* pRaft, void* pMsg) {}
 
+// ---------------------------------------------
+cJSON* syncRpcMsg2Json(SRpcMsg* pRpcMsg) {
+  cJSON* pRoot;
+
+  if (pRpcMsg->msgType == SYNC_PING) {
+    SyncPing* pSyncMsg = (SyncPing*)pRpcMsg->pCont;
+    pRoot = syncPing2Json(pSyncMsg);
+
+  } else if (pRpcMsg->msgType == SYNC_PING_REPLY) {
+    SyncPingReply* pSyncMsg = (SyncPingReply*)pRpcMsg->pCont;
+    pRoot = syncPingReply2Json(pSyncMsg);
+
+  } else if (pRpcMsg->msgType == SYNC_CLIENT_REQUEST) {
+    pRoot = syncRpcUnknownMsg2Json();
+
+  } else if (pRpcMsg->msgType == SYNC_CLIENT_REQUEST_REPLY) {
+    pRoot = syncRpcUnknownMsg2Json();
+
+  } else if (pRpcMsg->msgType == SYNC_REQUEST_VOTE) {
+    SyncRequestVote* pSyncMsg = (SyncRequestVote*)pRpcMsg->pCont;
+    pRoot = syncRequestVote2Json(pSyncMsg);
+
+  } else if (pRpcMsg->msgType == SYNC_REQUEST_VOTE_REPLY) {
+    SyncRequestVoteReply* pSyncMsg = (SyncRequestVoteReply*)pRpcMsg->pCont;
+    pRoot = syncRequestVoteReply2Json(pSyncMsg);
+
+  } else if (pRpcMsg->msgType == SYNC_APPEND_ENTRIES) {
+    SyncAppendEntries* pSyncMsg = (SyncAppendEntries*)pRpcMsg->pCont;
+    pRoot = syncAppendEntries2Json(pSyncMsg);
+
+  } else if (pRpcMsg->msgType == SYNC_APPEND_ENTRIES_REPLY) {
+    SyncAppendEntriesReply* pSyncMsg = (SyncAppendEntriesReply*)pRpcMsg->pCont;
+    pRoot = syncAppendEntriesReply2Json(pSyncMsg);
+
+  } else {
+    pRoot = syncRpcUnknownMsg2Json();
+  }
+
+  cJSON* pJson = cJSON_CreateObject();
+  cJSON_AddItemToObject(pJson, "RpcMsg", pRoot);
+  return pJson;
+}
+
+cJSON* syncRpcUnknownMsg2Json() {
+  cJSON* pRoot = cJSON_CreateObject();
+  cJSON_AddNumberToObject(pRoot, "msgType", SYNC_UNKNOWN);
+  cJSON_AddStringToObject(pRoot, "data", "known message");
+
+  cJSON* pJson = cJSON_CreateObject();
+  cJSON_AddItemToObject(pJson, "SyncPing", pRoot);
+  return pJson;
+}
+
 // ---- message process SyncPing----
 SyncPing* syncPingBuild(uint32_t dataLen) {
   uint32_t  bytes = SYNC_PING_FIX_LEN + dataLen;
diff --git a/source/libs/sync/src/syncReplication.c b/source/libs/sync/src/syncReplication.c
index 4cea7c150e..e3e551fd2b 100644
--- a/source/libs/sync/src/syncReplication.c
+++ b/source/libs/sync/src/syncReplication.c
@@ -14,3 +14,5 @@
  */
 
 #include "syncReplication.h"
+
+void syncNodeAppendEntriesPeers(SSyncNode* pSyncNode) {}
\ No newline at end of file
diff --git a/source/libs/sync/test/CMakeLists.txt b/source/libs/sync/test/CMakeLists.txt
index 2913d230b2..4c5f7ffa56 100644
--- a/source/libs/sync/test/CMakeLists.txt
+++ b/source/libs/sync/test/CMakeLists.txt
@@ -8,6 +8,7 @@ add_executable(syncIOSendMsgTest "")
 add_executable(syncIOSendMsgClientTest "")
 add_executable(syncIOSendMsgServerTest "")
 add_executable(syncRaftStoreTest "")
+add_executable(syncEnqTest "")
 
 
 target_sources(syncTest
@@ -50,6 +51,10 @@ target_sources(syncRaftStoreTest
     PRIVATE
     "syncRaftStoreTest.cpp"
 )
+target_sources(syncEnqTest
+    PRIVATE
+    "syncEnqTest.cpp"
+)
 
 
 target_include_directories(syncTest
@@ -102,6 +107,11 @@ target_include_directories(syncRaftStoreTest
     "${CMAKE_SOURCE_DIR}/include/libs/sync"
     "${CMAKE_CURRENT_SOURCE_DIR}/../inc"
 )
+target_include_directories(syncEnqTest
+    PUBLIC
+    "${CMAKE_SOURCE_DIR}/include/libs/sync"
+    "${CMAKE_CURRENT_SOURCE_DIR}/../inc"
+)
 
 
 target_link_libraries(syncTest
@@ -144,6 +154,10 @@ target_link_libraries(syncRaftStoreTest
     sync
     gtest_main
 )
+target_link_libraries(syncEnqTest
+    sync
+    gtest_main
+)
 
 
 enable_testing()
diff --git a/source/libs/sync/test/syncEnqTest.cpp b/source/libs/sync/test/syncEnqTest.cpp
new file mode 100644
index 0000000000..57e2da6193
--- /dev/null
+++ b/source/libs/sync/test/syncEnqTest.cpp
@@ -0,0 +1,99 @@
+#include <stdio.h>
+#include "syncEnv.h"
+#include "syncIO.h"
+#include "syncInt.h"
+#include "syncRaftStore.h"
+
+void logTest() {
+  sTrace("--- sync log test: trace");
+  sDebug("--- sync log test: debug");
+  sInfo("--- sync log test: info");
+  sWarn("--- sync log test: warn");
+  sError("--- sync log test: error");
+  sFatal("--- sync log test: fatal");
+}
+
+uint16_t ports[3] = {7010, 7110, 7210};
+
+SSyncNode* doSync(int myIndex) {
+  SSyncFSM* pFsm;
+
+  SSyncInfo syncInfo;
+  syncInfo.vgId = 1;
+  syncInfo.rpcClient = gSyncIO->clientRpc;
+  syncInfo.FpSendMsg = syncIOSendMsg;
+  syncInfo.queue = gSyncIO->pMsgQ;
+  syncInfo.FpEqMsg = syncIOEqMsg;
+  syncInfo.pFsm = pFsm;
+  snprintf(syncInfo.path, sizeof(syncInfo.path), "%s", "./test_sync_ping");
+
+  SSyncCfg* pCfg = &syncInfo.syncCfg;
+  pCfg->myIndex = myIndex;
+  pCfg->replicaNum = 3;
+
+  pCfg->nodeInfo[0].nodePort = ports[0];
+  snprintf(pCfg->nodeInfo[0].nodeFqdn, sizeof(pCfg->nodeInfo[0].nodeFqdn), "%s", "127.0.0.1");
+  // taosGetFqdn(pCfg->nodeInfo[0].nodeFqdn);
+
+  pCfg->nodeInfo[1].nodePort = ports[1];
+  snprintf(pCfg->nodeInfo[1].nodeFqdn, sizeof(pCfg->nodeInfo[1].nodeFqdn), "%s", "127.0.0.1");
+  // taosGetFqdn(pCfg->nodeInfo[1].nodeFqdn);
+
+  pCfg->nodeInfo[2].nodePort = ports[2];
+  snprintf(pCfg->nodeInfo[2].nodeFqdn, sizeof(pCfg->nodeInfo[2].nodeFqdn), "%s", "127.0.0.1");
+  // taosGetFqdn(pCfg->nodeInfo[2].nodeFqdn);
+
+  SSyncNode* pSyncNode = syncNodeOpen(&syncInfo);
+  assert(pSyncNode != NULL);
+
+  gSyncIO->FpOnSyncPing = pSyncNode->FpOnPing;
+  gSyncIO->pSyncNode = pSyncNode;
+
+  return pSyncNode;
+}
+
+void timerPingAll(void* param, void* tmrId) {
+  SSyncNode* pSyncNode = (SSyncNode*)param;
+  syncNodePingAll(pSyncNode);
+}
+
+int main(int argc, char** argv) {
+  // taosInitLog((char*)"syncPingTest.log", 100000, 10);
+  tsAsyncLog = 0;
+  sDebugFlag = 143 + 64;
+
+  logTest();
+
+  int myIndex = 0;
+  if (argc >= 2) {
+    myIndex = atoi(argv[1]);
+    if (myIndex > 2 || myIndex < 0) {
+      fprintf(stderr, "myIndex:%d error. should be 0 - 2", myIndex);
+      return 1;
+    }
+  }
+
+  int32_t ret = syncIOStart((char*)"127.0.0.1", ports[myIndex]);
+  assert(ret == 0);
+
+  ret = syncEnvStart();
+  assert(ret == 0);
+
+  SSyncNode* pSyncNode = doSync(myIndex);
+  gSyncIO->FpOnSyncPing = pSyncNode->FpOnPing;
+  gSyncIO->FpOnSyncPingReply = pSyncNode->FpOnPingReply;
+
+  for (int i = 0; i < 10; ++i) {
+    SyncPingReply* pSyncMsg = syncPingReplyBuild3(&pSyncNode->raftId, &pSyncNode->raftId);
+    SRpcMsg   rpcMsg;
+    syncPingReply2RpcMsg(pSyncMsg, &rpcMsg);
+    pSyncNode->FpEqMsg(pSyncNode->queue, &rpcMsg);
+    taosMsleep(1000);
+  }
+
+  while (1) {
+    taosMsleep(1000);
+  }
+
+  return 0;
+}
diff --git a/source/libs/sync/test/syncPingTest.cpp b/source/libs/sync/test/syncPingTest.cpp
index 8268128347..06ba5ba6ce 100644
--- a/source/libs/sync/test/syncPingTest.cpp
+++ b/source/libs/sync/test/syncPingTest.cpp
@@ -22,6 +22,8 @@ SSyncNode* doSync(int myIndex) {
   syncInfo.vgId = 1;
   syncInfo.rpcClient = gSyncIO->clientRpc;
   syncInfo.FpSendMsg = syncIOSendMsg;
+  syncInfo.queue = gSyncIO->pMsgQ;
+  syncInfo.FpEqMsg = syncIOEqMsg;
   syncInfo.pFsm = pFsm;
   snprintf(syncInfo.path, sizeof(syncInfo.path), "%s", "./test_sync_ping");
 
@@ -80,11 +82,9 @@ int main(int argc, char** argv) {
   ret = syncNodeStartPingTimer(pSyncNode);
   assert(ret == 0);
 
-  /*
-    taosMsleep(10000);
-    ret = syncNodeStopPingTimer(pSyncNode);
-    assert(ret == 0);
-  */
+  taosMsleep(10000);
+  ret = syncNodeStopPingTimer(pSyncNode);
+  assert(ret == 0);
 
   while (1) {
     taosMsleep(1000);