diff --git a/include/libs/sync/syncTools.h b/include/libs/sync/syncTools.h
index 09e24477d73c496507b75063714354f3f99f6d44..de2271554d2b9166ec240ea07e91dea9d017ef92 100644
--- a/include/libs/sync/syncTools.h
+++ b/include/libs/sync/syncTools.h
@@ -490,6 +490,24 @@ typedef struct SyncHeartbeatReply {
   int64_t  startTime;
 } SyncHeartbeatReply;
 
+SyncHeartbeatReply* syncHeartbeatReplyBuild(int32_t vgId);
+void                syncHeartbeatReplyDestroy(SyncHeartbeatReply* pMsg);
+void                syncHeartbeatReplySerialize(const SyncHeartbeatReply* pMsg, char* buf, uint32_t bufLen);
+void                syncHeartbeatReplyDeserialize(const char* buf, uint32_t len, SyncHeartbeatReply* pMsg);
+char*               syncHeartbeatReplySerialize2(const SyncHeartbeatReply* pMsg, uint32_t* len);
+SyncHeartbeatReply* syncHeartbeatReplyDeserialize2(const char* buf, uint32_t len);
+void                syncHeartbeatReply2RpcMsg(const SyncHeartbeatReply* pMsg, SRpcMsg* pRpcMsg);
+void                syncHeartbeatReplyFromRpcMsg(const SRpcMsg* pRpcMsg, SyncHeartbeatReply* pMsg);
+SyncHeartbeatReply* syncHeartbeatReplyFromRpcMsg2(const SRpcMsg* pRpcMsg);
+cJSON*              syncHeartbeatReply2Json(const SyncHeartbeatReply* pMsg);
+char*               syncHeartbeatReply2Str(const SyncHeartbeatReply* pMsg);
+
+// for debug ----------------------
+void syncHeartbeatReplyPrint(const SyncHeartbeatReply* pMsg);
+void syncHeartbeatReplyPrint2(char* s, const SyncHeartbeatReply* pMsg);
+void syncHeartbeatReplyLog(const SyncHeartbeatReply* pMsg);
+void syncHeartbeatReplyLog2(char* s, const SyncHeartbeatReply* pMsg);
+
 // ---------------------------------------------
 typedef struct SyncApplyMsg {
   uint32_t   bytes;
diff --git a/source/libs/sync/src/syncMessage.c b/source/libs/sync/src/syncMessage.c
index a16f87059fb01012cf8edceea3711fcb176b0b72..faebe5bbecb16012831ed103de520c14accc81d5 100644
--- a/source/libs/sync/src/syncMessage.c
+++ b/source/libs/sync/src/syncMessage.c
@@ -1999,7 +1999,7 @@ SyncHeartbeat* syncHeartbeatBuild(int32_t vgId) {
   memset(pMsg, 0, bytes);
   pMsg->bytes = bytes;
   pMsg->vgId = vgId;
-  pMsg->msgType = TDMT_SYNC_APPEND_ENTRIES;
+  pMsg->msgType = TDMT_SYNC_HEARTBEAT;
   return pMsg;
 }
 
@@ -2145,6 +2145,160 @@ void syncHeartbeatLog2(char* s, const SyncHeartbeat* pMsg) {
   }
 }
 
+// ---- message process SyncHeartbeatReply----
+SyncHeartbeatReply* syncHeartbeatReplyBuild(int32_t vgId) {
+  uint32_t            bytes = sizeof(SyncHeartbeatReply);
+  SyncHeartbeatReply* pMsg = taosMemoryMalloc(bytes);
+  memset(pMsg, 0, bytes);
+  pMsg->bytes = bytes;
+  pMsg->vgId = vgId;
+  pMsg->msgType = TDMT_SYNC_HEARTBEAT_REPLY;
+  return pMsg;
+}
+
+void syncHeartbeatReplyDestroy(SyncHeartbeatReply* pMsg) {
+  if (pMsg != NULL) {
+    taosMemoryFree(pMsg);
+  }
+}
+
+void syncHeartbeatReplySerialize(const SyncHeartbeatReply* pMsg, char* buf, uint32_t bufLen) {
+  ASSERT(pMsg->bytes <= bufLen);
+  memcpy(buf, pMsg, pMsg->bytes);
+}
+
+void syncHeartbeatReplyDeserialize(const char* buf, uint32_t len, SyncHeartbeatReply* pMsg) {
+  memcpy(pMsg, buf, len);
+  ASSERT(len == pMsg->bytes);
+}
+
+char* syncHeartbeatReplySerialize2(const SyncHeartbeatReply* pMsg, uint32_t* len) {
+  char* buf = taosMemoryMalloc(pMsg->bytes);
+  ASSERT(buf != NULL);
+  syncHeartbeatReplySerialize(pMsg, buf, pMsg->bytes);
+  if (len != NULL) {
+    *len = pMsg->bytes;
+  }
+  return buf;
+}
+
+SyncHeartbeatReply* syncHeartbeatReplyDeserialize2(const char* buf, uint32_t len) {
+  uint32_t            bytes = *((uint32_t*)buf);
+  SyncHeartbeatReply* pMsg = taosMemoryMalloc(bytes);
+  ASSERT(pMsg != NULL);
+  syncHeartbeatReplyDeserialize(buf, len, pMsg);
+  ASSERT(len == pMsg->bytes);
+  return pMsg;
+}
+
+void syncHeartbeatReply2RpcMsg(const SyncHeartbeatReply* pMsg, SRpcMsg* pRpcMsg) {
+  memset(pRpcMsg, 0, sizeof(*pRpcMsg));
+  pRpcMsg->msgType = pMsg->msgType;
+  pRpcMsg->contLen = pMsg->bytes;
+  pRpcMsg->pCont = rpcMallocCont(pRpcMsg->contLen);
+  syncHeartbeatReplySerialize(pMsg, pRpcMsg->pCont, pRpcMsg->contLen);
+}
+
+void syncHeartbeatReplyFromRpcMsg(const SRpcMsg* pRpcMsg, SyncHeartbeatReply* pMsg) {
+  syncHeartbeatReplyDeserialize(pRpcMsg->pCont, pRpcMsg->contLen, pMsg);
+}
+
+SyncHeartbeatReply* syncHeartbeatReplyFromRpcMsg2(const SRpcMsg* pRpcMsg) {
+  SyncHeartbeatReply* pMsg = syncHeartbeatReplyDeserialize2(pRpcMsg->pCont, pRpcMsg->contLen);
+  ASSERT(pMsg != NULL);
+  return pMsg;
+}
+
+cJSON* syncHeartbeatReply2Json(const SyncHeartbeatReply* pMsg) {
+  char   u64buf[128] = {0};
+  cJSON* pRoot = cJSON_CreateObject();
+
+  if (pMsg != NULL) {
+    cJSON_AddNumberToObject(pRoot, "bytes", pMsg->bytes);
+    cJSON_AddNumberToObject(pRoot, "vgId", pMsg->vgId);
+    cJSON_AddNumberToObject(pRoot, "msgType", pMsg->msgType);
+
+    cJSON* pSrcId = cJSON_CreateObject();
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->srcId.addr);
+    cJSON_AddStringToObject(pSrcId, "addr", u64buf);
+    {
+      uint64_t u64 = pMsg->srcId.addr;
+      cJSON*   pTmp = pSrcId;
+      char     host[128] = {0};
+      uint16_t port;
+      syncUtilU642Addr(u64, host, sizeof(host), &port);
+      cJSON_AddStringToObject(pTmp, "addr_host", host);
+      cJSON_AddNumberToObject(pTmp, "addr_port", port);
+    }
+    cJSON_AddNumberToObject(pSrcId, "vgId", pMsg->srcId.vgId);
+    cJSON_AddItemToObject(pRoot, "srcId", pSrcId);
+
+    cJSON* pDestId = cJSON_CreateObject();
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->destId.addr);
+    cJSON_AddStringToObject(pDestId, "addr", u64buf);
+    {
+      uint64_t u64 = pMsg->destId.addr;
+      cJSON*   pTmp = pDestId;
+      char     host[128] = {0};
+      uint16_t port;
+      syncUtilU642Addr(u64, host, sizeof(host), &port);
+      cJSON_AddStringToObject(pTmp, "addr_host", host);
+      cJSON_AddNumberToObject(pTmp, "addr_port", port);
+    }
+    cJSON_AddNumberToObject(pDestId, "vgId", pMsg->destId.vgId);
+    cJSON_AddItemToObject(pRoot, "destId", pDestId);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->privateTerm);
+    cJSON_AddStringToObject(pRoot, "privateTerm", u64buf);
+
+    snprintf(u64buf, sizeof(u64buf), "%" PRIu64, pMsg->term);
+    cJSON_AddStringToObject(pRoot, "term", u64buf);
+
+    cJSON_AddStringToObject(pRoot, "matchIndex", u64buf);
+    snprintf(u64buf, sizeof(u64buf), "%" PRId64, pMsg->startTime);
+    cJSON_AddStringToObject(pRoot, "startTime", u64buf);
+  }
+
+  cJSON* pJson = cJSON_CreateObject();
+  cJSON_AddItemToObject(pJson, "SyncHeartbeatReply", pRoot);
+  return pJson;
+}
+
+char* syncHeartbeatReply2Str(const SyncHeartbeatReply* pMsg) {
+  cJSON* pJson = syncHeartbeatReply2Json(pMsg);
+  char*  serialized = cJSON_Print(pJson);
+  cJSON_Delete(pJson);
+  return serialized;
+}
+
+void syncHeartbeatReplyPrint(const SyncHeartbeatReply* pMsg) {
+  char* serialized = syncHeartbeatReply2Str(pMsg);
+  printf("syncHeartbeatReplyPrint | len:%" PRIu64 " | %s \n", strlen(serialized), serialized);
+  fflush(NULL);
+  taosMemoryFree(serialized);
+}
+
+void syncHeartbeatReplyPrint2(char* s, const SyncHeartbeatReply* pMsg) {
+  char* serialized = syncHeartbeatReply2Str(pMsg);
+  printf("syncHeartbeatReplyPrint2 | len:%" PRIu64 " | %s | %s \n", strlen(serialized), s, serialized);
+  fflush(NULL);
+  taosMemoryFree(serialized);
+}
+
+void syncHeartbeatReplyLog(const SyncHeartbeatReply* pMsg) {
+  char* serialized = syncHeartbeatReply2Str(pMsg);
+  sTrace("syncHeartbeatReplyLog | len:%" PRIu64 " | %s", strlen(serialized), serialized);
+  taosMemoryFree(serialized);
+}
+
+void syncHeartbeatReplyLog2(char* s, const SyncHeartbeatReply* pMsg) {
+  if (gRaftDetailLog) {
+    char* serialized = syncHeartbeatReply2Str(pMsg);
+    sTrace("syncHeartbeatReplyLog2 | len:%" PRIu64 " | %s | %s", strlen(serialized), s, serialized);
+    taosMemoryFree(serialized);
+  }
+}
+
 // ---- message process SyncApplyMsg----
 SyncApplyMsg* syncApplyMsgBuild(uint32_t dataLen) {
   uint32_t      bytes = sizeof(SyncApplyMsg) + dataLen;
diff --git a/source/libs/sync/test/CMakeLists.txt b/source/libs/sync/test/CMakeLists.txt
index e2be1523c074adce7f15b48d387f5f7d3bf00362..b9cc7a391dde35e2569f30000752b3ef175fc824 100644
--- a/source/libs/sync/test/CMakeLists.txt
+++ b/source/libs/sync/test/CMakeLists.txt
@@ -58,6 +58,7 @@ add_executable(syncReconfigFinishTest "")
 add_executable(syncRestoreFromSnapshot "")
 add_executable(syncRaftCfgIndexTest "")
 add_executable(syncHeartbeatTest "")
+add_executable(syncHeartbeatReplyTest "")
 
 
 target_sources(syncTest
@@ -300,6 +301,10 @@ target_sources(syncHeartbeatTest
     PRIVATE
     "syncHeartbeatTest.cpp"
 )
+target_sources(syncHeartbeatReplyTest
+    PRIVATE
+    "syncHeartbeatReplyTest.cpp"
+)
 
 
 target_include_directories(syncTest
@@ -602,6 +607,11 @@ target_include_directories(syncHeartbeatTest
     "${TD_SOURCE_DIR}/include/libs/sync"
     "${CMAKE_CURRENT_SOURCE_DIR}/../inc"
 )
+target_include_directories(syncHeartbeatReplyTest
+    PUBLIC
+    "${TD_SOURCE_DIR}/include/libs/sync"
+    "${CMAKE_CURRENT_SOURCE_DIR}/../inc"
+)
 
 
 target_link_libraries(syncTest
@@ -844,6 +854,10 @@ target_link_libraries(syncHeartbeatTest
     sync
     gtest_main
 )
+target_link_libraries(syncHeartbeatReplyTest
+    sync
+    gtest_main
+)
 
 
 enable_testing()
diff --git a/source/libs/sync/test/syncHeartbeatReplyTest.cpp b/source/libs/sync/test/syncHeartbeatReplyTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..0ccd7b70bb8f552fa14c0a615993abbab678a8a0
--- /dev/null
+++ b/source/libs/sync/test/syncHeartbeatReplyTest.cpp
@@ -0,0 +1,105 @@
+#include <gtest/gtest.h>
+#include <stdio.h>
+#include "syncIO.h"
+#include "syncInt.h"
+#include "syncMessage.h"
+#include "syncUtil.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");
+}
+
+SyncHeartbeatReply *createMsg() {
+  SyncHeartbeatReply *pMsg = syncHeartbeatReplyBuild(1000);
+  pMsg->srcId.addr = syncUtilAddr2U64("127.0.0.1", 1234);
+  pMsg->srcId.vgId = 100;
+  pMsg->destId.addr = syncUtilAddr2U64("127.0.0.1", 5678);
+  pMsg->destId.vgId = 100;
+
+  pMsg->term = 33;
+  pMsg->privateTerm = 44;
+  pMsg->startTime = taosGetTimestampMs();
+  return pMsg;
+}
+
+void test1() {
+  SyncHeartbeatReply *pMsg = createMsg();
+  syncHeartbeatReplyLog2((char *)"test1:", pMsg);
+  syncHeartbeatReplyDestroy(pMsg);
+}
+
+void test2() {
+  SyncHeartbeatReply *pMsg = createMsg();
+  uint32_t                len = pMsg->bytes;
+  char *                  serialized = (char *)taosMemoryMalloc(len);
+  syncHeartbeatReplySerialize(pMsg, serialized, len);
+  SyncHeartbeatReply *pMsg2 = syncHeartbeatReplyBuild(1000);
+  syncHeartbeatReplyDeserialize(serialized, len, pMsg2);
+  syncHeartbeatReplyLog2((char *)"test2: syncHeartbeatReplySerialize -> syncHeartbeatReplyDeserialize ",
+                             pMsg2);
+
+  taosMemoryFree(serialized);
+  syncHeartbeatReplyDestroy(pMsg);
+  syncHeartbeatReplyDestroy(pMsg2);
+}
+
+void test3() {
+  SyncHeartbeatReply *pMsg = createMsg();
+  uint32_t                len;
+  char *                  serialized = syncHeartbeatReplySerialize2(pMsg, &len);
+  SyncHeartbeatReply *pMsg2 = syncHeartbeatReplyDeserialize2(serialized, len);
+  syncHeartbeatReplyLog2((char *)"test3: syncHeartbeatReplySerialize3 -> syncHeartbeatReplyDeserialize2 ",
+                             pMsg2);
+
+  taosMemoryFree(serialized);
+  syncHeartbeatReplyDestroy(pMsg);
+  syncHeartbeatReplyDestroy(pMsg2);
+}
+
+void test4() {
+  SyncHeartbeatReply *pMsg = createMsg();
+  SRpcMsg                 rpcMsg;
+  syncHeartbeatReply2RpcMsg(pMsg, &rpcMsg);
+  SyncHeartbeatReply *pMsg2 = syncHeartbeatReplyBuild(1000);
+  syncHeartbeatReplyFromRpcMsg(&rpcMsg, pMsg2);
+  syncHeartbeatReplyLog2((char *)"test4: syncHeartbeatReply2RpcMsg -> syncHeartbeatReplyFromRpcMsg ",
+                             pMsg2);
+
+  rpcFreeCont(rpcMsg.pCont);
+  syncHeartbeatReplyDestroy(pMsg);
+  syncHeartbeatReplyDestroy(pMsg2);
+}
+
+void test5() {
+  SyncHeartbeatReply *pMsg = createMsg();
+  SRpcMsg                 rpcMsg;
+  syncHeartbeatReply2RpcMsg(pMsg, &rpcMsg);
+  SyncHeartbeatReply *pMsg2 = syncHeartbeatReplyFromRpcMsg2(&rpcMsg);
+  syncHeartbeatReplyLog2((char *)"test5: syncHeartbeatReply2RpcMsg -> syncHeartbeatReplyFromRpcMsg2 ",
+                             pMsg2);
+
+  rpcFreeCont(rpcMsg.pCont);
+  syncHeartbeatReplyDestroy(pMsg);
+  syncHeartbeatReplyDestroy(pMsg2);
+}
+
+int main() {
+  gRaftDetailLog = true;
+
+  tsAsyncLog = 0;
+  sDebugFlag = DEBUG_TRACE + DEBUG_SCREEN + DEBUG_FILE;
+  logTest();
+
+  test1();
+  test2();
+  test3();
+  test4();
+  test5();
+
+  return 0;
+}