diff --git a/jasset/models.py b/jasset/models.py
index a9bae0ec6..ad32eb982 100644
--- a/jasset/models.py
+++ b/jasset/models.py
@@ -20,7 +20,7 @@ class Asset(models.Model):
     password_common = models.CharField(max_length=160, blank=True, null=True)
     username_super = models.CharField(max_length=80, blank=True, null=True)
     password_super = models.CharField(max_length=160, blank=True, null=True)
-    date_added = models.CharField(max_length=80)
+    date_added = models.IntegerField(max_length=80)
     comment = models.CharField(max_length=100, blank=True, null=True)
 
     def __unicode__(self):
diff --git a/test_add_user.py b/test_add_user.py
new file mode 100644
index 000000000..e24208450
--- /dev/null
+++ b/test_add_user.py
@@ -0,0 +1,29 @@
+#coding: utf-8
+import os
+import django
+
+os.environ['DJANGO_SETTINGS_MODULE'] = 'jumpserver.settings'
+django.setup()
+from juser.models import User, Group
+from jasset.models import Asset, IDC
+from jpermission.models import Permission
+
+
+g = Group(name='wzp', comment='wzp project')
+g.save()
+
+u = User(username='hadoop', password='hadoop', name='hadoop', email='ibuler@qq.com', group=g,
+         ldap_pwd='hadoop', ssh_key_pwd='hadoop', date_joined=0)
+u.save()
+
+i = IDC(name='lf')
+i.save()
+
+a = Asset(ip='172.16.1.122', port=2001, idc=i, group=g, date_added=0)
+a.save()
+
+p = Permission(user=u, asset=a)
+p.save()
+
+
+