diff --git a/src/query/src/qfill.c b/src/query/src/qfill.c
index a8cd62ef98..84b2b2c5cf 100644
--- a/src/query/src/qfill.c
+++ b/src/query/src/qfill.c
@@ -110,6 +110,12 @@ void taosDestoryFillInfo(SFillInfo* pFillInfo) {
   tfree(pFillInfo->prevValues);
   tfree(pFillInfo->nextValues);
   tfree(pFillInfo->pTags);
+  
+  for(int32_t i = 0; i < pFillInfo->numOfCols; ++i) {
+    tfree(pFillInfo->pData[i]);
+  }
+  
+  tfree(pFillInfo->pData);
   tfree(pFillInfo);
 }