diff --git a/source/dnode/vnode/src/tqCommon/tqCommon.c b/source/dnode/vnode/src/tqCommon/tqCommon.c
index 6e90e51058..b3c4479efc 100644
--- a/source/dnode/vnode/src/tqCommon/tqCommon.c
+++ b/source/dnode/vnode/src/tqCommon/tqCommon.c
@@ -622,9 +622,6 @@ int32_t tqStreamTaskProcessDropReq(SStreamMeta* pMeta, char* msg, int32_t msgLen
     streamMetaReleaseTask(pMeta, pTask);
   }
 
-  // TODO: send the checkpoint complete msg if it is in checkpoint procedure.
-
-
   // drop the stream task now
   streamMetaUnregisterTask(pMeta, pReq->streamId, pReq->taskId);
 
diff --git a/source/libs/stream/src/streamDispatch.c b/source/libs/stream/src/streamDispatch.c
index 1a67b08749..5fb7db233f 100644
--- a/source/libs/stream/src/streamDispatch.c
+++ b/source/libs/stream/src/streamDispatch.c
@@ -720,14 +720,21 @@ int32_t streamTaskSendCheckpointReadyMsg(SStreamTask* pTask) {
 
 // this function is only invoked by source task, and send rsp to mnode
 int32_t streamTaskSendCheckpointSourceRsp(SStreamTask* pTask) {
-  ASSERT(pTask->info.taskLevel == TASK_LEVEL__SOURCE && taosArrayGetSize(pTask->pReadyMsgList) == 1);
-  SStreamChkptReadyInfo* pInfo = taosArrayGet(pTask->pReadyMsgList, 0);
+  taosThreadMutexLock(&pTask->lock);
 
-  tmsgSendRsp(&pInfo->msg);
+  ASSERT(pTask->info.taskLevel == TASK_LEVEL__SOURCE);
 
-  taosArrayClear(pTask->pReadyMsgList);
-  stDebug("s-task:%s level:%d source checkpoint completed msg sent to mnode", pTask->id.idStr, pTask->info.taskLevel);
+  if (taosArrayGetSize(pTask->pReadyMsgList) == 1) {
+    SStreamChkptReadyInfo* pInfo = taosArrayGet(pTask->pReadyMsgList, 0);
+    tmsgSendRsp(&pInfo->msg);
 
+    taosArrayClear(pTask->pReadyMsgList);
+    stDebug("s-task:%s level:%d source checkpoint completed msg sent to mnode", pTask->id.idStr, pTask->info.taskLevel);
+  } else {
+    stDebug("s-task:%s level:%d already send rsp to mnode", pTask->id.idStr, pTask->info.taskLevel);
+  }
+
+  taosThreadMutexUnlock(&pTask->lock);
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/source/libs/stream/src/streamTask.c b/source/libs/stream/src/streamTask.c
index db0217f000..335f9d27d5 100644
--- a/source/libs/stream/src/streamTask.c
+++ b/source/libs/stream/src/streamTask.c
@@ -302,17 +302,25 @@ static void freeUpstreamItem(void* p) {
 }
 
 void tFreeStreamTask(SStreamTask* pTask) {
-  int32_t taskId = pTask->id.taskId;
-
+  char*                p = NULL;
+  int32_t              taskId = pTask->id.taskId;
   STaskExecStatisInfo* pStatis = &pTask->execInfo;
-  stDebug("start to free s-task:0x%x, %p, state:%p", taskId, pTask, pTask->pState);
 
+  ETaskStatus status1 = TASK_STATUS__UNINIT;
+  taosThreadMutexLock(&pTask->lock);
+  if (pTask->status.pSM != NULL) {
+    status1 = streamTaskGetStatus(pTask, &p);
+  }
+  taosThreadMutexUnlock(&pTask->lock);
+
+  stDebug("start to free s-task:0x%x, %p, state:%s", taskId, pTask, p);
+
+  SCheckpointInfo* pCkInfo = &pTask->chkInfo;
   stDebug("s-task:0x%x task exec summary: create:%" PRId64 ", init:%" PRId64 ", start:%" PRId64
           ", updateCount:%d latestUpdate:%" PRId64 ", latestCheckPoint:%" PRId64 ", ver:%" PRId64
           " nextProcessVer:%" PRId64 ", checkpointCount:%d",
           taskId, pStatis->created, pStatis->init, pStatis->start, pStatis->updateCount, pStatis->latestUpdateTs,
-          pTask->chkInfo.checkpointId, pTask->chkInfo.checkpointVer, pTask->chkInfo.nextProcessVer,
-          pStatis->checkpoint);
+          pCkInfo->checkpointId, pCkInfo->checkpointVer, pCkInfo->nextProcessVer, pStatis->checkpoint);
 
   // remove the ref by timer
   while (pTask->status.timerActive > 0) {
@@ -335,7 +343,6 @@ void tFreeStreamTask(SStreamTask* pTask) {
     pTask->msgInfo.pTimer = NULL;
   }
 
-  int32_t status = atomic_load_8((int8_t*)&(pTask->status.taskStatus));
   if (pTask->inputq.queue) {
     streamQueueClose(pTask->inputq.queue, pTask->id.taskId);
   }
@@ -377,9 +384,8 @@ void tFreeStreamTask(SStreamTask* pTask) {
 
   if (pTask->pState) {
     stDebug("s-task:0x%x start to free task state", taskId);
-    streamStateClose(pTask->pState, status == TASK_STATUS__DROPPING);
+    streamStateClose(pTask->pState, status1 == TASK_STATUS__DROPPING);
     taskDbRemoveRef(pTask->pBackend);
-     
   }
 
   if (pTask->id.idStr != NULL) {
@@ -396,7 +402,6 @@ void tFreeStreamTask(SStreamTask* pTask) {
   }
 
   pTask->status.pSM = streamDestroyStateMachine(pTask->status.pSM);
-
   streamTaskDestroyUpstreamInfo(&pTask->upstreamInfo);
 
   pTask->msgInfo.pRetryList = taosArrayDestroy(pTask->msgInfo.pRetryList);
diff --git a/source/libs/stream/src/streamTaskSm.c b/source/libs/stream/src/streamTaskSm.c
index cac3766893..68ae1cce36 100644
--- a/source/libs/stream/src/streamTaskSm.c
+++ b/source/libs/stream/src/streamTaskSm.c
@@ -56,6 +56,7 @@ static int32_t streamTaskInitStatus(SStreamTask* pTask);
 static int32_t streamTaskKeepCurrentVerInWal(SStreamTask* pTask);
 static int32_t initStateTransferTable();
 static void    doInitStateTransferTable(void);
+static int32_t streamTaskSendTransSuccessMsg(SStreamTask* pTask);
 
 static STaskStateTrans createStateTransform(ETaskStatus current, ETaskStatus next, EStreamTaskEvent event,
                                             __state_trans_fn fn, __state_trans_succ_fn succFn,
@@ -87,6 +88,13 @@ static int32_t streamTaskDoCheckpoint(SStreamTask* pTask) {
   return 0;
 }
 
+int32_t streamTaskSendTransSuccessMsg(SStreamTask* pTask) {
+  if (pTask->info.taskLevel == TASK_LEVEL__SOURCE) {
+    streamTaskSendCheckpointSourceRsp(pTask);
+  }
+  return 0;
+}
+
 int32_t streamTaskKeepCurrentVerInWal(SStreamTask* pTask) {
   ASSERT(HAS_RELATED_FILLHISTORY_TASK(pTask));
 
@@ -551,7 +559,7 @@ void doInitStateTransferTable(void) {
   taosArrayPush(streamTaskSMTrans, &trans);
   trans = createStateTransform(TASK_STATUS__PAUSE, TASK_STATUS__DROPPING, TASK_EVENT_DROPPING, NULL, NULL, NULL, true);
   taosArrayPush(streamTaskSMTrans, &trans);
-  trans = createStateTransform(TASK_STATUS__CK, TASK_STATUS__DROPPING, TASK_EVENT_DROPPING, NULL, NULL, NULL, true);
+  trans = createStateTransform(TASK_STATUS__CK, TASK_STATUS__DROPPING, TASK_EVENT_DROPPING, streamTaskSendTransSuccessMsg, NULL, NULL, true);
   taosArrayPush(streamTaskSMTrans, &trans);
   trans = createStateTransform(TASK_STATUS__STREAM_SCAN_HISTORY, TASK_STATUS__DROPPING, TASK_EVENT_DROPPING, NULL, NULL, NULL, true);
   taosArrayPush(streamTaskSMTrans, &trans);