diff --git a/source/dnode/vnode/src/tsdb/tsdbUtil.c b/source/dnode/vnode/src/tsdb/tsdbUtil.c
index c6f0310599..7286dcc149 100644
--- a/source/dnode/vnode/src/tsdb/tsdbUtil.c
+++ b/source/dnode/vnode/src/tsdb/tsdbUtil.c
@@ -13,6 +13,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "osMemory.h"
 #include "tdataformat.h"
 #include "tsdb.h"
 
@@ -1259,7 +1260,11 @@ void tBlockDataReset(SBlockData *pBlockData) {
   pBlockData->suid = 0;
   pBlockData->uid = 0;
   pBlockData->nRow = 0;
+  for (int32_t i = 0; i < pBlockData->nColData; i++) {
+    tColDataDestroy(&pBlockData->aColData[i]);
+  }
   pBlockData->nColData = 0;
+  taosMemoryFreeClear(pBlockData->aColData);
 }
 
 void tBlockDataClear(SBlockData *pBlockData) {