diff --git a/account/decorators.py b/account/decorators.py
index 92f29081..a4a4f8d4 100644
--- a/account/decorators.py
+++ b/account/decorators.py
@@ -48,7 +48,7 @@ class admin_role_required(BasePermissionDecorator):
 
 class problem_permission_required(admin_role_required):
     def check_permission(self):
-        if not super(problem_permission_required, self).check_permission():
+        if not super().check_permission():
             return False
         if self.request.user.problem_permission == ProblemPermission.NONE:
             return False
diff --git a/group/__init__.py b/group/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/group/migrations/0001_initial.py b/group/migrations/0001_initial.py
new file mode 100644
index 00000000..ca6eeec1
--- /dev/null
+++ b/group/migrations/0001_initial.py
@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.3 on 2018-05-04 02:10
+from __future__ import unicode_literals
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Group',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.TextField()),
+                ('description', models.TextField()),
+                ('create_time', models.DateTimeField(auto_now_add=True)),
+                ('created_by', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='my_groups', to=settings.AUTH_USER_MODEL)),
+                ('members', models.ManyToManyField(to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'db_table': 'group',
+            },
+        ),
+    ]
diff --git a/group/migrations/__init__.py b/group/migrations/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/group/models.py b/group/models.py
new file mode 100644
index 00000000..69050ba4
--- /dev/null
+++ b/group/models.py
@@ -0,0 +1,13 @@
+from django.db import models
+from account.models import User
+
+
+class Group(models.Model):
+    name = models.TextField()
+    description = models.TextField()
+    create_time = models.DateTimeField(auto_now_add=True)
+    created_by = models.ForeignKey(User, related_name="my_groups")
+    members = models.ManyToManyField(User)
+
+    class Meta:
+        db_table = "group"
diff --git a/group/serializers.py b/group/serializers.py
new file mode 100644
index 00000000..ac60fd23
--- /dev/null
+++ b/group/serializers.py
@@ -0,0 +1,12 @@
+from utils.api import serializers
+from utils.api._serializers import UsernameSerializer
+
+from .models import Group
+
+
+class GroupSerializer(serializers.ModelSerializer):
+    created_by = UsernameSerializer()
+
+    class Meta:
+        model = Group
+        fields = "__all__"
diff --git a/group/tests.py b/group/tests.py
new file mode 100644
index 00000000..e69de29b
diff --git a/group/urls/__init__.py b/group/urls/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/group/urls/admin.py b/group/urls/admin.py
new file mode 100644
index 00000000..2a6780cf
--- /dev/null
+++ b/group/urls/admin.py
@@ -0,0 +1,7 @@
+from django.conf.urls import url
+
+from ..views.admin import GroupAPI
+
+urlpatterns = [
+    url(r"^group/?$", GroupAPI.as_view(), name="group_api"),
+]
diff --git a/group/views/__init__.py b/group/views/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/group/views/admin.py b/group/views/admin.py
new file mode 100644
index 00000000..9d949080
--- /dev/null
+++ b/group/views/admin.py
@@ -0,0 +1,35 @@
+from account.decorators import admin_role_required, ensure_created_by
+from utils.api import APIView, validate_serializer
+
+from ..models import Group
+from ..serializers import GroupSerializer
+
+
+class GroupAPI(APIView):
+    @admin_role_required
+    def get(self, request):
+        _id = request.GET.get("id")
+        keyword = request.GET.get("keyword")
+        user = request.user
+        if _id:
+            try:
+                group = Group.objects.get(id=_id)
+                ensure_created_by(group, user)
+                return self.success(GroupSerializer(group).data)
+            except Group.DoesNotExist:
+                return self.error("Group does not exist")
+        groups = Group.objects.all().order_by("-create_time")
+        if not user.is_super_admin():
+            groups = groups.filter(created_by=user)
+        if keyword:
+            groups = groups.filter(name__contains=keyword)
+        return self.success(self.paginate_data(request, groups, GroupSerializer))
+
+    def post(self, request):
+        pass
+
+    def put(self, request):
+        pass
+
+    def delete(self, request):
+        pass
diff --git a/oj/urls.py b/oj/urls.py
index c626656b..e12e2dcc 100644
--- a/oj/urls.py
+++ b/oj/urls.py
@@ -14,4 +14,5 @@ urlpatterns = [
     url(r"^api/", include("submission.urls.oj")),
     url(r"^api/admin/", include("submission.urls.admin")),
     url(r"^api/admin/", include("utils.urls")),
+    url(r"^api/admin/", include("group.urls.admin"))
 ]