diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index 97955c0c49..0446ca7dee 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -4267,7 +4267,8 @@ typedef struct {
       void*   rawData;
     };
   };
-  void*   data;  //for free, only effected if type is data or metadata. raw data not effected
+  void*   data;  //for free in client, only effected if type is data or metadata. raw data not effected
+  bool    blockDataElementFree;   // if true, free blockDataElement in blockData,(true in server, false in client)
 
 } SMqDataRsp;
 
diff --git a/source/common/src/msg/tmsg.c b/source/common/src/msg/tmsg.c
index fbf721993b..75791ed0ce 100644
--- a/source/common/src/msg/tmsg.c
+++ b/source/common/src/msg/tmsg.c
@@ -11451,6 +11451,8 @@ int32_t tDecodeMqDataRspCommon(SDecoder *pDecoder, SMqDataRsp *pRsp) {
       if (taosArrayPush(pRsp->blockData, &data) == NULL) {
         TAOS_CHECK_EXIT(terrno);
       }
+      pRsp->blockDataElementFree = false;
+
       int32_t len = bLen;
       if (taosArrayPush(pRsp->blockDataLen, &len) == NULL) {
         TAOS_CHECK_EXIT(terrno);
@@ -11510,7 +11512,11 @@ _exit:
 static void tDeleteMqDataRspCommon(SMqDataRsp *pRsp) {
   taosArrayDestroy(pRsp->blockDataLen);
   pRsp->blockDataLen = NULL;
-  taosArrayDestroy(pRsp->blockData);
+  if (pRsp->blockDataElementFree){
+    taosArrayDestroyP(pRsp->blockData)
+  } else {
+    taosArrayDestroy(pRsp->blockData);
+  }
   pRsp->blockData = NULL;
   taosArrayDestroyP(pRsp->blockSchema, (FDelete)tDeleteSchemaWrapper);
   pRsp->blockSchema = NULL;
diff --git a/source/dnode/vnode/src/tq/tqScan.c b/source/dnode/vnode/src/tq/tqScan.c
index 0de5803881..ead040b7a5 100644
--- a/source/dnode/vnode/src/tq/tqScan.c
+++ b/source/dnode/vnode/src/tq/tqScan.c
@@ -62,7 +62,7 @@ static int32_t tqAddBlockDataToRsp(const SSDataBlock* pBlock, SMqDataRsp* pRsp,
   actualLen += sizeof(SRetrieveTableRspForTmq);
   TSDB_CHECK_NULL(taosArrayPush(pRsp->blockDataLen, &actualLen), code, lino, END, terrno);
   TSDB_CHECK_NULL(taosArrayPush(pRsp->blockData, &buf), code, lino, END, terrno);
-
+  pRsp->blockDataElementFree = true;
   buf = NULL;
 END:
   if (code != 0){