diff --git a/apps/assets/migrations/0114_node_domain.py b/apps/assets/migrations/0114_node_domain.py
index 896a611d5..0149a5d11 100644
--- a/apps/assets/migrations/0114_node_domain.py
+++ b/apps/assets/migrations/0114_node_domain.py
@@ -4,18 +4,11 @@ from django.db import migrations, models
 import django.db.models.deletion
 
 
+# TODO 最后去掉这个迁移
 class Migration(migrations.Migration):
     dependencies = [
         ('assets', '0113_alter_accounttemplate_options'),
     ]
 
     operations = [
-        migrations.AddField(
-            model_name='node',
-            name='domain',
-            field=models.ForeignKey(
-                blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL,
-                related_name='nodes', to='assets.domain', verbose_name='Domain'
-            ),
-        ),
     ]
diff --git a/apps/assets/models/asset/common.py b/apps/assets/models/asset/common.py
index 7f01c222d..81693252d 100644
--- a/apps/assets/models/asset/common.py
+++ b/apps/assets/models/asset/common.py
@@ -105,14 +105,6 @@ class Asset(NodesRelationMixin, AbsConnectivity, JMSOrgBaseModel):
     def __str__(self):
         return '{0.name}({0.address})'.format(self)
 
-    def get_domains(self):
-        from ..domain import Domain
-        node_ids = self.get_all_nodes(flat=True)
-        domains = Domain.objects.filter(
-            Q(nodes__id__in=node_ids) | Q(id=self.domain_id)
-        ).distinct()
-        return domains
-
     @property
     def specific(self):
         if not hasattr(self, self.category):
diff --git a/apps/assets/models/node.py b/apps/assets/models/node.py
index bf394e982..54bdecf61 100644
--- a/apps/assets/models/node.py
+++ b/apps/assets/models/node.py
@@ -558,10 +558,6 @@ class Node(OrgModelMixin, SomeNodesMixin, FamilyMixin, NodeAssetsMixin):
         max_length=64, verbose_name=_("Parent key"), db_index=True, default=''
     )
     assets_amount = models.IntegerField(default=0)
-    domain = models.ForeignKey(
-        "assets.Domain", null=True, blank=True, related_name='nodes',
-        verbose_name=_("Domain"), on_delete=models.SET_NULL
-    )
 
     objects = OrgManager.from_queryset(NodeQuerySet)()
     is_node = True
diff --git a/apps/assets/serializers/domain.py b/apps/assets/serializers/domain.py
index 617aa34bc..f60cb9516 100644
--- a/apps/assets/serializers/domain.py
+++ b/apps/assets/serializers/domain.py
@@ -14,12 +14,8 @@ from .utils import validate_password_for_ansible, validate_ssh_key
 
 
 class DomainSerializer(BulkOrgResourceModelSerializer):
-    node_count = serializers.SerializerMethodField(label=_('Nodes amount'))
     asset_count = serializers.SerializerMethodField(label=_('Assets amount'))
     gateway_count = serializers.SerializerMethodField(label=_('Gateways count'))
-    nodes = ObjectRelatedField(
-        many=True, required=False, queryset=Node.objects, label=_('Node')
-    )
     assets = ObjectRelatedField(
         many=True, required=False, queryset=Asset.objects, label=_('Asset')
     )
@@ -29,17 +25,13 @@ class DomainSerializer(BulkOrgResourceModelSerializer):
         fields_mini = ['id', 'name']
         fields_small = fields_mini + ['comment']
         fields_m2m = ['nodes', 'assets']
-        read_only_fields = ['node_count', 'asset_count', 'gateway_count', 'date_created']
+        read_only_fields = ['asset_count', 'gateway_count', 'date_created']
         fields = fields_small + fields_m2m + read_only_fields
 
         extra_kwargs = {
             'assets': {'required': False, 'label': _('Assets')},
         }
 
-    @staticmethod
-    def get_node_count(obj):
-        return obj.nodes.count()
-
     @staticmethod
     def get_asset_count(obj):
         return obj.assets.count()
diff --git a/apps/ops/ansible/inventory.py b/apps/ops/ansible/inventory.py
index aa7f8186d..1e006ae77 100644
--- a/apps/ops/ansible/inventory.py
+++ b/apps/ops/ansible/inventory.py
@@ -1,7 +1,6 @@
 # ~*~ coding: utf-8 ~*~
 import json
 import os
-import random
 from collections import defaultdict
 
 from django.utils.translation import gettext as _
@@ -118,10 +117,8 @@ class JMSInventory:
         host.update(ansible_config)
 
         gateway = None
-        domains = asset.get_domains()
-        if domains:
-            gateways = [i.select_gateway() for i in domains if i.select_gateway()]
-            gateway = random.choice(gateways) if gateways else None
+        if asset.domain:
+            gateway = asset.domain.select_gateway()
 
         if ansible_connection == 'local':
             if gateway: