diff --git a/tests/system-test/1-insert/insert_drop.py b/tests/system-test/1-insert/insert_drop.py
index 029d013d5bd82a00511df1fcef9755b9dee99259..930c65d90ef00cf318e03d49e4ff4afd4c1d41f3 100644
--- a/tests/system-test/1-insert/insert_drop.py
+++ b/tests/system-test/1-insert/insert_drop.py
@@ -31,6 +31,10 @@ class TDTestCase:
         tdSql.execute('create database if not exists test;')
         tdSql.execute('create table test.stb (ts timestamp, c11 int, c12 float ) TAGS(t11 int, t12 int );')
         tdSql.execute('create table test.tb using test.stb TAGS (1, 1);')
+
+        # double comma insert check error
+        tdSql.error("insert into test.tb(ts, c11) values(now,,100)")
+
         sql_list = list()
         for i in range(5):
             sql = f'insert into test.tb values (now-{i}m, {i}, {i});'