diff --git a/tests/system-test/1-insert/test_stmt_insert_query_ex.py b/tests/system-test/1-insert/test_stmt_insert_query_ex.py
index 6d49f6065a329ca833cbf927452799a85c6e6337..dee7ee74518dd8f380f5c25daf20cfc3d5d976e3 100644
--- a/tests/system-test/1-insert/test_stmt_insert_query_ex.py
+++ b/tests/system-test/1-insert/test_stmt_insert_query_ex.py
@@ -82,7 +82,7 @@ class TDTestCase:
         return con
         
     def test_stmt_set_tbname_tag(self,conn):
-        dbname = "stmt_set_tbname_tag"
+        dbname = "stmt_tag"
         
         try:
             conn.execute("drop database if exists %s" % dbname)
@@ -196,31 +196,31 @@ class TDTestCase:
             assert rows3[0][0] == 12, 'fourth case is failed'
             assert rows3[1][0] == 12, 'fourth case is failed'
 
-            # #query: conversion Functions
+            #query: conversion Functions
 
-            # querystmt4=conn.statement("select cast( ? as bigint) from log  ")
-            # queryparam4=new_bind_params(1)
-            # print(type(queryparam4))
-            # queryparam4[0].binary('1232a')
-            # querystmt4.bind_param(queryparam4)
-            # querystmt4.execute() 
-            # result4=querystmt4.use_result()
-            # rows4=result4.fetch_all()
-            # print("5",rows4)
-            # assert rows4[0][0] == 1232
-            # assert rows4[1][0] == 1232
+            querystmt4=conn.statement("select cast( ? as bigint) from log  ")
+            queryparam4=new_bind_params(1)
+            print(type(queryparam4))
+            queryparam4[0].binary('1232a')
+            querystmt4.bind_param(queryparam4)
+            querystmt4.execute() 
+            result4=querystmt4.use_result()
+            rows4=result4.fetch_all()
+            print("5",rows4)
+            assert rows4[0][0] == 1232
+            assert rows4[1][0] == 1232
 
-            # querystmt4=conn.statement("select cast( ? as binary(10)) from log  ")
-            # queryparam4=new_bind_params(1)
-            # print(type(queryparam4))
-            # queryparam4[0].int(123)
-            # querystmt4.bind_param(queryparam4)
-            # querystmt4.execute() 
-            # result4=querystmt4.use_result()
-            # rows4=result4.fetch_all()
-            # print("6",rows4)
-            # assert rows4[0][0] == '123'
-            # assert rows4[1][0] == '123'
+            querystmt4=conn.statement("select cast( ? as binary(10)) from log  ")
+            queryparam4=new_bind_params(1)
+            print(type(queryparam4))
+            queryparam4[0].int(123)
+            querystmt4.bind_param(queryparam4)
+            querystmt4.execute() 
+            result4=querystmt4.use_result()
+            rows4=result4.fetch_all()
+            print("6",rows4)
+            assert rows4[0][0] == '123'
+            assert rows4[1][0] == '123'
 
             # #query: datatime Functions
 
diff --git a/tests/system-test/1-insert/test_stmt_muti_insert_query.py b/tests/system-test/1-insert/test_stmt_muti_insert_query.py
index 971be6c85fb20e4960fe902cd3b329acb4931237..de10b2f6b9b848907799eb86fff9b26e1d2f192e 100644
--- a/tests/system-test/1-insert/test_stmt_muti_insert_query.py
+++ b/tests/system-test/1-insert/test_stmt_muti_insert_query.py
@@ -84,21 +84,21 @@ class TDTestCase:
     def test_stmt_insert_multi(self,conn):
         # type: (TaosConnection) -> None
 
-        dbname = "pytest_taos_stmt_multi"
+        dbname = "db_stmt"
         try:
             conn.execute("drop database if exists %s" % dbname)
             conn.execute("create database if not exists %s" % dbname)
             conn.select_db(dbname)
 
             conn.execute(
-                "create table if not exists log(ts timestamp, bo bool, nil tinyint, ti tinyint, si smallint, ii int,\
+                "create table if not exists stb1(ts timestamp, bo bool, nil tinyint, ti tinyint, si smallint, ii int,\
                 bi bigint, tu tinyint unsigned, su smallint unsigned, iu int unsigned, bu bigint unsigned, \
                 ff float, dd double, bb binary(100), nn nchar(100), tt timestamp)",
             )
             # conn.load_table_info("log")
 
             start = datetime.now()
-            stmt = conn.statement("insert into log values(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)")
+            stmt = conn.statement("insert into stb1 values(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)")
 
             params = new_multi_binds(16)
             params[0].timestamp((1626861392589, 1626861392590, 1626861392591))
@@ -125,7 +125,7 @@ class TDTestCase:
             assert stmt.affected_rows == 3
             
             #query 1
-            querystmt=conn.statement("select ?,bu from log")
+            querystmt=conn.statement("select ?,bu from stb1")
             queryparam=new_bind_params(1)
             print(type(queryparam))
             queryparam[0].binary("ts")
@@ -135,7 +135,7 @@ class TDTestCase:
             # rows=result.fetch_all()
             # print( querystmt.use_result())
 
-            # result = conn.query("select * from log")
+            # result = conn.query("select * from stb1")
             rows=result.fetch_all()
             # rows=result.fetch_all()
             print(rows)
@@ -144,7 +144,7 @@ class TDTestCase:
             assert rows[2][1] == None
 
             #query 2
-            querystmt1=conn.statement("select * from log where bu < ?")
+            querystmt1=conn.statement("select * from stb1 where bu < ?")
             queryparam1=new_bind_params(1)
             print(type(queryparam1))
             queryparam1[0].int(4)