diff --git a/tests/system-test/2-query/first.py b/tests/system-test/2-query/first.py
index 906d8b82b4..dcb4f8213e 100644
--- a/tests/system-test/2-query/first.py
+++ b/tests/system-test/2-query/first.py
@@ -88,9 +88,9 @@ class TDTestCase:
                 # nchar
                 elif i == 13:
                     tdSql.checkData(0, 0, f'{self.nchar_str}1')
-        # tdSql.query("select first(*),last(*) from stb where ts < 23 interval(1s)")
-        # tdSql.checkRows(0)
-        # tdSql.execute('drop database db')
+        tdSql.query("select first(*),last(*) from stb where ts < 23 interval(1s)")
+        tdSql.checkRows(0)
+        tdSql.execute('drop database db')
     def first_check_stb_distribute(self):
         # prepare data for vgroup 4
         dbname = self.get_long_name(length=10, mode="letters")
@@ -150,16 +150,16 @@ class TDTestCase:
                 # nchar
                 elif i == 13:
                     tdSql.checkData(0, 0, f'{self.nchar_str}1')
-        # tdSql.query("select first(*),last(*) from {stbname} where ts < 23 interval(1s)")
-        # tdSql.checkRows(0)
-        # tdSql.execute('drop database db')
+        tdSql.query("select first(*),last(*) from {stbname} where ts < 23 interval(1s)")
+        tdSql.checkRows(0)
+        tdSql.execute('drop database db')
         
         
         
         pass
     def run(self):
         self.first_check_base()
-
+        self.first_check_stb_distribute()
         
                 
     def stop(self):