diff --git a/src/client/src/tscSubquery.c b/src/client/src/tscSubquery.c
index dfdbe9fd0b03fbba1211b0ded23b273c771ca6d4..4576af6e81bd712ab25d40eacc880bc058df6c83 100644
--- a/src/client/src/tscSubquery.c
+++ b/src/client/src/tscSubquery.c
@@ -2731,7 +2731,8 @@ void tscHandleSubqueryError(SRetrieveSupport *trsupport, SSqlObj *pSql, int numO
 
       SSqlObj *userSql = ((SRetrieveSupport*)pParentSql->param)->pParentSql;
 
-      tscFreeSubobj(userSql);
+      tscFreeSubobj(userSql);      
+      tfree(pSql->pSubs);
 
       pParentSql->res.code = TSDB_CODE_SUCCESS;
       pParentSql->retry++;
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index bc55357ddf15d35e76bcc979f0a2114a7d5f606f..cb797b5ceb2cbca0edc9e5e9e03d4b6b4c33a14f 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -3767,7 +3767,8 @@ static void tscSubqueryCompleteCallback(void* param, TAOS_RES* tres, int code) {
 
     SSqlObj *userSql = ((SRetrieveSupport*)pParentSql->param)->pParentSql;
 
-    tscFreeSubobj(userSql);
+    tscFreeSubobj(userSql);    
+    tfree(pSql->pSubs);
 
     pParentSql->res.code = TSDB_CODE_SUCCESS;
     pParentSql->retry++;