diff --git a/apps/assets/forms.py b/apps/assets/forms.py
index 128d3492c..33df74a45 100644
--- a/apps/assets/forms.py
+++ b/apps/assets/forms.py
@@ -10,7 +10,7 @@ class AssetForm(forms.ModelForm):
         model = Asset
 
         fields = [
-            "ip", "other_ip", "remote_card_ip", "hostname", "port", "group", "username", "password", 
+            "ip", "other_ip", "remote_card_ip", "hostname", "port", "groups", "username", "password",
             "idc", "mac_addr", "brand", "cpu", "memory", "disk", "os", "cabinet_no", "cabinet_pos",
             "number", "status", "type", "env", "sn", "is_active", "comment"
         ]
diff --git a/apps/assets/models.py b/apps/assets/models.py
index 99b8b240a..91a506a5e 100644
--- a/apps/assets/models.py
+++ b/apps/assets/models.py
@@ -6,9 +6,9 @@ from django.utils.translation import ugettext_lazy as _
 
 
 class AssetGroup(models.Model):
-    name = models.CharField(max_length=64, unique=True, verbose_name=_('Name'))
-    created_by = models.CharField(max_length=32, blank=True, verbose_name=_('Created by'))
-    comment = models.CharField(max_length=128, blank=True, verbose_name=_('Comment'))
+    name = models.CharField(max_length=64, unique=True, null=True, blank=True, verbose_name=_('Name'))
+    created_by = models.CharField(max_length=32, null=True, blank=True, verbose_name=_('Created by'))
+    comment = models.CharField(max_length=128, null=True, blank=True, verbose_name=_('Comment'))
 
     def __unicode__(self):
         return self.name
@@ -50,61 +50,6 @@ class AssetExtend(models.Model):
         db_table = 'assetextend'
 
 
-class Asset(models.Model):
-    ip = models.CharField(max_length=32, blank=True, verbose_name=_('IP'))
-    other_ip = models.CharField(max_length=255, blank=True, verbose_name=_('Other IP'))
-    remote_card_ip = models.CharField(max_length=16, blank=True, verbose_name=_('Remote card IP'))
-    hostname = models.CharField(max_length=128, unique=True, blank=True, verbose_name=_('Hostname'))
-    port = models.IntegerField(blank=True, verbose_name=_('Port'))
-    groups = models.ManyToManyField(AssetGroup, blank=True, verbose_name=_('Asset groups'))
-    username = models.CharField(max_length=16, blank=True, verbose_name=_('Admin user'))
-    password = models.CharField(max_length=256, blank=True, verbose_name=_("Admin password"))
-    admin_user = models.ForeignKey(AdminUser, null=True, blank=True, on_delete=models.SET_NULL, verbose_name=_("Admin User"))
-    sys_user = models.ManyToManyField(SysUser, null=True, blank=True, verbose_name=_("Sys User"))
-    idc = models.ForeignKey(IDC, blank=True, null=True, on_delete=models.SET_NULL, verbose_name=_('IDC'))
-    mac_addr = models.CharField(max_length=20, blank=True, verbose_name=_("Mac address"))
-    brand = models.CharField(max_length=64, blank=True, verbose_name=_('Brand'))
-    cpu = models.CharField(max_length=64, blank=True, verbose_name=_('CPU'))
-    memory = models.CharField(max_length=128, blank=True, verbose_name=_('Memory'))
-    disk = models.CharField(max_length=1024, blank=True, verbose_name=_('Disk'))
-    os = models.CharField(max_length=128, blank=True, verbose_name=_('OS'))
-    cabinet_no = models.CharField(max_length=32, blank=True, verbose_name=_('Cabinet number'))
-    cabinet_pos = models.IntegerField(null=True, blank=True, verbose_name=_('Cabinet position'))
-    number = models.CharField(max_length=32, blank=True, unique=True, verbose_name=_('Asset number'))
-    status = models.ManyToManyField(AssetExtend, blank=True,
-                                    related_name="asset_status_extend", verbose_name=_('Asset status'))
-    type = models.ManyToManyField(AssetExtend, blank=True,
-                                  related_name="asset_type_extend", verbose_name=_('Asset type'))
-    env = models.ManyToManyField(AssetExtend, blank=True,
-                                 related_name="asset_env_extend", verbose_name=_('Asset environment'))
-    sn = models.CharField(max_length=128, blank=True, unique=True, verbose_name=_('Serial number'))
-    created_by = models.CharField(max_length=32, blank=True, verbose_name=_('Created by'))
-    is_active = models.BooleanField(default=True, verbose_name=_('Is active'))
-    date_added = models.DateTimeField(auto_now=True, null=True, verbose_name=_('Date added'))
-    comment = models.CharField(max_length=128, blank=True, verbose_name=_('Comment'))
-
-    def __unicode__(self):
-        return self.ip
-
-    class Meta:
-        db_table = 'asset'
-
-
-class Label(models.Model):
-    key = models.CharField(max_length=64, null=True, blank=True, verbose_name=u'key')
-    value = models.CharField(max_length=64, null=True, blank=True, verbose_name=u'value')
-    asset = models.ForeignKey(Asset, null=True, blank=True, on_delete=models.SET_NULL, verbose_name=u'label')
-    created_by = models.CharField(max_length=32, blank=True, verbose_name=_("Created by"))
-    date_added = models.DateTimeField(auto_now=True, null=True, blank=True)
-    comment = models.CharField(max_length=128, blank=True, verbose_name=_('Comment'))
-
-    def __unicode__(self):
-        return self.name
-
-    class Meta:
-        db_table = 'label'
-
-
 class AdminUser(models.Model):
     name = models.CharField(max_length=128, unique=True, null=True, blank=True, verbose_name=u"用户名称")
     username = models.CharField(max_length=16, null=True, blank=True, verbose_name=u"用户名")
@@ -147,3 +92,59 @@ class SysUser(models.Model):
     class Meta:
         db_table = 'sysuser'
 
+
+class Asset(models.Model):
+    ip = models.CharField(max_length=32, null=True, blank=True, verbose_name=_('IP'))
+    other_ip = models.CharField(max_length=255, null=True, blank=True, verbose_name=_('Other IP'))
+    remote_card_ip = models.CharField(max_length=16, null=True, blank=True, verbose_name=_('Remote card IP'))
+    hostname = models.CharField(max_length=128, unique=True, null=True, blank=True, verbose_name=_('Hostname'))
+    port = models.IntegerField(null=True, blank=True, verbose_name=_('Port'))
+    groups = models.ManyToManyField(AssetGroup, null=True, blank=True, verbose_name=_('Asset groups'))
+    username = models.CharField(max_length=16, null=True, blank=True, verbose_name=_('Admin user'))
+    password = models.CharField(max_length=256, null=True, blank=True, verbose_name=_("Admin password"))
+    admin_user = models.ForeignKey(AdminUser, null=True, blank=True, on_delete=models.SET_NULL, verbose_name=_("Admin User"))
+    sys_user = models.ManyToManyField(SysUser, null=True, blank=True, verbose_name=_("Sys User"))
+    idc = models.ForeignKey(IDC, null=True, blank=True, on_delete=models.SET_NULL, verbose_name=_('IDC'))
+    mac_addr = models.CharField(max_length=20, null=True, blank=True, verbose_name=_("Mac address"))
+    brand = models.CharField(max_length=64, null=True, blank=True, verbose_name=_('Brand'))
+    cpu = models.CharField(max_length=64, null=True, blank=True, verbose_name=_('CPU'))
+    memory = models.CharField(max_length=128, null=True, blank=True, verbose_name=_('Memory'))
+    disk = models.CharField(max_length=1024, null=True, blank=True, verbose_name=_('Disk'))
+    os = models.CharField(max_length=128, null=True, blank=True, verbose_name=_('OS'))
+    cabinet_no = models.CharField(max_length=32, null=True, blank=True, verbose_name=_('Cabinet number'))
+    cabinet_pos = models.IntegerField(null=True, blank=True, verbose_name=_('Cabinet position'))
+    number = models.CharField(max_length=32, null=True, blank=True, unique=True, verbose_name=_('Asset number'))
+    status = models.ManyToManyField(AssetExtend, null=True, blank=True,
+                                    related_name="asset_status_extend", verbose_name=_('Asset status'))
+    type = models.ManyToManyField(AssetExtend, null=True, blank=True,
+                                  related_name="asset_type_extend", verbose_name=_('Asset type'))
+    env = models.ManyToManyField(AssetExtend, null=True, blank=True,
+                                 related_name="asset_env_extend", verbose_name=_('Asset environment'))
+    sn = models.CharField(max_length=128, null=True, blank=True, unique=True, verbose_name=_('Serial number'))
+    created_by = models.CharField(max_length=32, null=True, blank=True, verbose_name=_('Created by'))
+    is_active = models.BooleanField(default=True, verbose_name=_('Is active'))
+    date_added = models.DateTimeField(auto_now=True, null=True, blank=True, verbose_name=_('Date added'))
+    comment = models.CharField(max_length=128, null=True, blank=True, verbose_name=_('Comment'))
+
+    def __unicode__(self):
+        return self.ip
+
+    class Meta:
+        db_table = 'asset'
+
+
+class Label(models.Model):
+    key = models.CharField(max_length=64, null=True, blank=True, verbose_name=u'key')
+    value = models.CharField(max_length=64, null=True, blank=True, verbose_name=u'value')
+    asset = models.ForeignKey(Asset, null=True, blank=True, on_delete=models.SET_NULL, verbose_name=u'label')
+    created_by = models.CharField(max_length=32, blank=True, verbose_name=_("Created by"))
+    date_added = models.DateTimeField(auto_now=True, null=True, blank=True)
+    comment = models.CharField(max_length=128, blank=True, verbose_name=_('Comment'))
+
+    def __unicode__(self):
+        return self.name
+
+    class Meta:
+        db_table = 'label'
+
+
diff --git a/apps/assets/views.py b/apps/assets/views.py
index b894692ad..b35abc7e4 100644
--- a/apps/assets/views.py
+++ b/apps/assets/views.py
@@ -1,7 +1,9 @@
+# coding:utf-8
+from __future__ import absolute_import, unicode_literals
+
 from django.views.generic import TemplateView, ListView
 from django.urls import reverse_lazy
 from django.views.generic.edit import CreateView, DeleteView, FormView, UpdateView
-from __future__ import absolute_import, unicode_literals
 
 from django.views.generic import TemplateView, ListView
 from django.views.generic.edit import CreateView, DeleteView, FormView, UpdateView