diff --git a/source/dnode/vnode/src/tq/tqSink.c b/source/dnode/vnode/src/tq/tqSink.c
index b22650d249..5e62f7f116 100644
--- a/source/dnode/vnode/src/tq/tqSink.c
+++ b/source/dnode/vnode/src/tq/tqSink.c
@@ -274,6 +274,8 @@ void tqSinkToTablePipeline(SStreamTask* pTask, void* vnode, int64_t ver, void* d
       tagArray = taosArrayDestroy(tagArray);
       taosArrayDestroyEx(crTblArray, (FDelete)tdDestroySVCreateTbReq);
       crTblArray = NULL;
+    } else if (pDataBlock->info.type == STREAM_CHECKPOINT) {
+      continue;
     } else {
       SSubmitTbData tbData = {0};
       tqDebug("tq sink pipe, convert block:%d, rows:%d", i, rows);
diff --git a/source/libs/executor/inc/executorInt.h b/source/libs/executor/inc/executorInt.h
index 400f7e5320..67c05d8b99 100644
--- a/source/libs/executor/inc/executorInt.h
+++ b/source/libs/executor/inc/executorInt.h
@@ -327,24 +327,24 @@ typedef struct SStreamScanInfo {
   SExprSupp     tagCalSup;
   int32_t       primaryTsIndex;  // primary time stamp slot id
   SReadHandle   readHandle;
-  SInterval     interval;  // if the upstream is an interval operator, the interval info is also kept here.
+  SInterval     interval;        // if the upstream is an interval operator, the interval info is also kept here.
   SColMatchInfo matchInfo;
 
-  SArray*      pBlockLists;  // multiple SSDatablock.
-  SSDataBlock* pRes;         // result SSDataBlock
-  SSDataBlock* pUpdateRes;   // update SSDataBlock
+  SArray*      pBlockLists;      // multiple SSDatablock.
+  SSDataBlock* pRes;             // result SSDataBlock
+  SSDataBlock* pUpdateRes;       // update SSDataBlock
   int32_t      updateResIndex;
   int32_t      blockType;        // current block type
   int32_t      validBlockIndex;  // Is current data has returned?
   uint64_t     numOfExec;        // execution times
   STqReader*   tqReader;
 
-  uint64_t     groupId;
+  uint64_t            groupId;
   struct SUpdateInfo* pUpdateInfo;
 
   EStreamScanMode       scanMode;
-  struct SOperatorInfo*        pStreamScanOp;
-  struct SOperatorInfo*        pTableScanOp;
+  struct SOperatorInfo* pStreamScanOp;
+  struct SOperatorInfo* pTableScanOp;
   SArray*               childIds;
   SWindowSupporter      windowSup;
   SPartitionBySupporter partitionSup;
@@ -366,12 +366,13 @@ typedef struct SStreamScanInfo {
   int32_t      blockRecoverTotCnt;
   SSDataBlock* pRecoverRes;
 
-  SSDataBlock*  pCreateTbRes;
-  int8_t        igCheckUpdate;
-  int8_t        igExpired;
-  void*         pState;         //void
+  SSDataBlock*   pCreateTbRes;
+  int8_t         igCheckUpdate;
+  int8_t         igExpired;
+  void*          pState;  // void
   SStoreTqReader readerFn;
-  SStateStore stateStore;
+  SStateStore    stateStore;
+  SSDataBlock*   pCheckpointRes;
 } SStreamScanInfo;
 
 typedef struct {
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 30e9d9e095..f0d5268b59 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -1769,7 +1769,7 @@ int32_t streamScanOperatorEncode(SStreamScanInfo* pInfo, void** pBuff) {
 
 void streamScanOperatorSaveCheckpoint(SStreamScanInfo* pInfo) {
   void* pBuf = NULL;
-  int32_t len = streamScanOperatorEncode(pInfo, pBuf);
+  int32_t len = streamScanOperatorEncode(pInfo, &pBuf);
   pInfo->stateStore.streamStateSaveInfo(pInfo->pState, STREAM_SCAN_OP_CHECKPOINT_NAME, strlen(STREAM_SCAN_OP_CHECKPOINT_NAME), pBuf, len);
 }
 
@@ -2188,7 +2188,7 @@ FETCH_NEXT_BLOCK:
       pAPI->stateStore.streamStateDeleteCheckPoint(pInfo->pState, pInfo->twAggSup.maxTs - pInfo->twAggSup.deleteMark);
     }
     printDataBlock(pBlock, "stream scan ck");
-    return pBlock;
+    return pInfo->pCheckpointRes;
   }
 
   return NULL;
@@ -2356,6 +2356,8 @@ static void destroyStreamScanOperatorInfo(void* param) {
   blockDataDestroy(pStreamScan->pUpdateDataRes);
   blockDataDestroy(pStreamScan->pCreateTbRes);
   taosArrayDestroy(pStreamScan->pBlockLists);
+  blockDataDestroy(pStreamScan->pCheckpointRes);
+
   taosMemoryFree(pStreamScan);
 }
 
@@ -2573,6 +2575,7 @@ SOperatorInfo* createStreamScanOperatorInfo(SReadHandle* pHandle, STableScanPhys
   pInfo->pState = NULL;
   pInfo->stateStore = pTaskInfo->storageAPI.stateStore;
   pInfo->readerFn = pTaskInfo->storageAPI.tqReaderFn;
+  pInfo->pCheckpointRes = createSpecialDataBlock(STREAM_CHECKPOINT);
 
   // for stream
   if (pTaskInfo->streamInfo.pState) {
diff --git a/source/libs/executor/src/timewindowoperator.c b/source/libs/executor/src/timewindowoperator.c
index cc3bcf514f..55f0920d2b 100644
--- a/source/libs/executor/src/timewindowoperator.c
+++ b/source/libs/executor/src/timewindowoperator.c
@@ -2828,7 +2828,7 @@ static SSDataBlock* doStreamFinalIntervalAgg(SOperatorInfo* pOperator) {
       qDebug("===stream===return data:%s. recv datablock num:%" PRIu64,
              IS_FINAL_OP(pInfo) ? "interval final" : "interval semi", pInfo->numOfDatapack);
       pInfo->numOfDatapack = 0;
-      break;
+      continue;
     } else {
       ASSERTS(pBlock->info.type == STREAM_INVALID, "invalid SSDataBlock type");
     }
@@ -3953,7 +3953,7 @@ static SSDataBlock* doStreamSessionAgg(SOperatorInfo* pOperator) {
       pAggSup->stateStore.streamStateCommit(pAggSup->pState);
       setStreamDataVersion(pOperator->pTaskInfo, pInfo->dataVersion, pAggSup->pState->checkPointId);
       copyDataBlock(pInfo->pCheckpointRes, pBlock);
-      break;
+      continue;
     } else {
       ASSERTS(pBlock->info.type == STREAM_NORMAL || pBlock->info.type == STREAM_INVALID, "invalid SSDataBlock type");
     }
@@ -4255,7 +4255,7 @@ static SSDataBlock* doStreamSessionSemiAgg(SOperatorInfo* pOperator) {
       pAggSup->stateStore.streamStateCommit(pAggSup->pState);
       setStreamDataVersion(pOperator->pTaskInfo, pInfo->dataVersion, pAggSup->pState->checkPointId);
       pOperator->status = OP_RES_TO_RETURN;
-      break;
+      continue;
     } else {
       ASSERTS(pBlock->info.type == STREAM_NORMAL || pBlock->info.type == STREAM_INVALID, "invalid SSDataBlock type");
     }
@@ -5543,7 +5543,7 @@ static SSDataBlock* doStreamIntervalAgg(SOperatorInfo* pOperator) {
       copyDataBlock(pInfo->pCheckpointRes, pBlock);
       qDebug("===stream===return data:single interval. recv datablock num:%" PRIu64, pInfo->numOfDatapack);
       pInfo->numOfDatapack = 0;
-      break;
+      continue;
     } else {
       ASSERTS(pBlock->info.type == STREAM_NORMAL || pBlock->info.type == STREAM_INVALID, "invalid SSDataBlock type");
     }