diff --git a/tests/pytest/alter/alter_create_exception.py b/tests/pytest/alter/alter_create_exception.py
new file mode 100644
index 0000000000000000000000000000000000000000..19f1ba9464617fe120740ec26a411a216cfd9a48
--- /dev/null
+++ b/tests/pytest/alter/alter_create_exception.py
@@ -0,0 +1,91 @@
+###################################################################
+#           Copyright (c) 2016 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+#TODO: after TD-4518 and TD-4510 is resolved, add the exception test case for these situations
+
+import sys
+from util.log import *
+from util.cases import *
+from util.sql import *
+
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+    def run(self):
+        tdSql.prepare()
+
+        #checking string input exception for alter
+        tdSql.error("alter database db keep '10'")
+        tdSql.error('alter database db keep "10"')
+        tdSql.error("alter database db keep '\t'")
+        tdSql.error("alter database db keep \'\t\'")
+        tdSql.error('alter database db keep "a"')
+        tdSql.error('alter database db keep "1.4"')
+        tdSql.error("alter database db blocks '10'")
+        tdSql.error('alter database db comp "0"')
+        tdSql.execute('drop database if exists db')
+
+        #checking string input exception for create
+        tdSql.error("create database db comp '0'")
+        tdSql.error('create database db comp "1"')
+        tdSql.error("create database db comp '\t'")
+        tdSql.error("alter database db keep \'\t\'")
+        tdSql.error('create database db comp "a"')
+        tdSql.error('create database db comp "1.4"')
+        tdSql.error("create database db blocks '10'")
+        tdSql.error('create database db keep "3650"')
+        tdSql.error('create database db fsync "3650"')
+        tdSql.execute('create database db precision "us"')
+        tdSql.query('show databases')
+        tdSql.checkData(0,16,'us')
+        tdSql.execute('drop database if exists db')
+
+        #checking float input exception for create
+        tdSql.error("create database db fsync 7.3")
+        tdSql.error("create database db fsync 0.0")
+        tdSql.error("create database db fsync -5.32")
+        tdSql.error('create database db comp 7.2')
+        tdSql.error("create database db blocks 5.87")
+        tdSql.error('create database db keep 15.4')
+
+        #checking float input exception for insert
+        tdSql.execute('create database db')
+        tdSql.error('alter database db blocks 5.9')
+        tdSql.error('alter database db blocks -4.7')
+        tdSql.error('alter database db blocks 0.0')
+        tdSql.error('alter database db keep 15.4')
+        tdSql.error('alter database db comp 2.67')
+
+        #checking additional exception param for alter keep
+        tdSql.error('alter database db keep 365001')
+        tdSql.error('alter database db keep 364999,365000,365001')
+        tdSql.error('alter database db keep -10')
+        tdSql.error('alter database db keep 5')
+        tdSql.error('alter database db keep ')
+        tdSql.error('alter database db keep 40,a,60')
+        tdSql.error('alter database db keep ,,60,')
+        tdSql.error('alter database db keep \t')
+        tdSql.execute('alter database db keep \t50')
+        tdSql.query('show databases')
+        tdSql.checkData(0,7,'50,50,50')
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
\ No newline at end of file