diff --git a/tests/develop-test/5-taos-tools/taosbenchmark/default_json.py b/tests/develop-test/5-taos-tools/taosbenchmark/default_json.py
index 7599c82483509807d222d73557d3164c35159403..f5aa181aed02427f6e1bb22070810d43c0d67cb6 100644
--- a/tests/develop-test/5-taos-tools/taosbenchmark/default_json.py
+++ b/tests/develop-test/5-taos-tools/taosbenchmark/default_json.py
@@ -61,9 +61,9 @@ class TDTestCase:
         os.system("%s" % cmd)
         tdSql.execute("reset query cache")
         tdSql.query("show db.tables")
-        tdSql.checkRows(10)
+        tdSql.checkRows(8)
         tdSql.query("select count(*) from db.stb")
-        tdSql.checkData(0, 0, 100)
+        tdSql.checkData(0, 0, 80)
 
     def stop(self):
         tdSql.close()
diff --git a/tests/develop-test/5-taos-tools/taosbenchmark/json/default.json b/tests/develop-test/5-taos-tools/taosbenchmark/json/default.json
index da22ef75e2a648e897341338bb762e4fedc6662b..c841e90b5168afc11bcf8248a0f37c9ba16d30d0 100644
--- a/tests/develop-test/5-taos-tools/taosbenchmark/json/default.json
+++ b/tests/develop-test/5-taos-tools/taosbenchmark/json/default.json
@@ -15,13 +15,18 @@
   "num_of_records_per_req": 10,
   "databases": [{
     "dbinfo": {
-      "name": "db"
+      "name": "db",
+      "drop": "yes"
+
     },
     "super_tables": [{
+      "child_table_exists":"no",
       "name": "stb",
       "childtable_prefix": "stb_",
       "childtable_count": 10,
       "insert_rows": 10,
+      "childtable_from": 1,
+      "childtable_to": 9,
       "columns": [{"type": "INT"}],
       "tags": [{"type": "INT"}]
     }]