diff --git a/lib/groupher_server/cms/models/community.ex b/lib/groupher_server/cms/models/community.ex
index 9b05539..630e383 100644
--- a/lib/groupher_server/cms/models/community.ex
+++ b/lib/groupher_server/cms/models/community.ex
@@ -27,7 +27,7 @@ defmodule GroupherServer.CMS.Model.Community do
 
   @required_fields ~w(title desc user_id logo slug)a
   # @required_fields ~w(title desc user_id)a
-  @optional_fields ~w(favicon label geo_info index aka contributes_digest pending)a
+  @optional_fields ~w(favicon label geo_info index aka contributes_digest pending locale)a
 
   def max_pinned_article_count_per_thread, do: @max_pinned_article_count_per_thread
 
@@ -43,6 +43,7 @@ defmodule GroupherServer.CMS.Model.Community do
     field(:index, :integer)
     field(:geo_info, :map)
     field(:views, :integer)
+    field(:locale, :string)
 
     embeds_one(:meta, Embeds.CommunityMeta, on_replace: :delete)
     belongs_to(:author, User, foreign_key: :user_id)
diff --git a/lib/groupher_server_web/schema/cms/cms_types.ex b/lib/groupher_server_web/schema/cms/cms_types.ex
index dade240..c14aca1 100644
--- a/lib/groupher_server_web/schema/cms/cms_types.ex
+++ b/lib/groupher_server_web/schema/cms/cms_types.ex
@@ -185,6 +185,7 @@ defmodule GroupherServerWeb.Schema.CMS.Types do
     field(:index, :integer)
     field(:logo, :string)
     field(:author, :user, resolve: dataloader(CMS, :author))
+    field(:locale, :string)
     field(:threads, list_of(:thread_item), resolve: dataloader(CMS, :threads))
     field(:categories, list_of(:category), resolve: dataloader(CMS, :categories))
     field(:dashboard, :dashboard, resolve: dataloader(CMS, :dashboard))
diff --git a/lib/groupher_server_web/schema/cms/mutations/community.ex b/lib/groupher_server_web/schema/cms/mutations/community.ex
index 82af080..fcb7837 100644
--- a/lib/groupher_server_web/schema/cms/mutations/community.ex
+++ b/lib/groupher_server_web/schema/cms/mutations/community.ex
@@ -11,6 +11,7 @@ defmodule GroupherServerWeb.Schema.CMS.Mutations.Community do
       arg(:desc, non_null(:string))
       arg(:slug, non_null(:string))
       arg(:logo, non_null(:string))
+      arg(:locale, :string)
 
       middleware(M.Authorize, :login)
       middleware(M.Passport, claim: "cms->community.create")
@@ -26,6 +27,7 @@ defmodule GroupherServerWeb.Schema.CMS.Mutations.Community do
       arg(:desc, :string)
       arg(:slug, :string)
       arg(:logo, :string)
+      arg(:locale, :string)
 
       middleware(M.Authorize, :login)
       middleware(M.Passport, claim: "cms->community.update")
@@ -48,6 +50,7 @@ defmodule GroupherServerWeb.Schema.CMS.Mutations.Community do
       arg(:desc, non_null(:string))
       arg(:slug, non_null(:string))
       arg(:logo, non_null(:string))
+      arg(:locale, :string)
       arg(:apply_msg, :string)
       arg(:apply_category, :string)
 
diff --git a/lib/support/factory.ex b/lib/support/factory.ex
index c9e8083..73bd6b4 100644
--- a/lib/support/factory.ex
+++ b/lib/support/factory.ex
@@ -216,7 +216,8 @@ defmodule GroupherServer.Support.Factory do
       desc: "community desc",
       slug: title,
       logo: "https://coderplanets.oss-cn-beijing.aliyuncs.com/icons/pl/elixir.svg",
-      author: mock(:user)
+      author: mock(:user),
+      locale: "en"
     }
   end
 
diff --git a/priv/repo/migrations/20240502110245_add_locale_to_community.exs b/priv/repo/migrations/20240502110245_add_locale_to_community.exs
new file mode 100644
index 0000000..062c7a5
--- /dev/null
+++ b/priv/repo/migrations/20240502110245_add_locale_to_community.exs
@@ -0,0 +1,9 @@
+defmodule GroupherServer.Repo.Migrations.AddLocaleToCommunity do
+  use Ecto.Migration
+
+  def change do
+    alter table(:communities, prefix: "cms") do
+      add(:locale, :string)
+    end
+  end
+end
diff --git a/test/groupher_server/accounts/oauth_test.exs b/test/groupher_server/accounts/oauth_test.exs
index 104daeb..c7efcb5 100644
--- a/test/groupher_server/accounts/oauth_test.exs
+++ b/test/groupher_server/accounts/oauth_test.exs
@@ -3,7 +3,7 @@ defmodule GroupherServer.Test.Accounts.Oauth do
   # TODO import Service.Utils move both helper and github
   import Helper.Utils
 
-  alias Helper.{Guardian, ORM}
+  alias Helper.ORM
   alias GroupherServer.Accounts
 
   alias Accounts.Model.{User, OauthProvider}
diff --git a/test/groupher_server/cms/community/community_test.exs b/test/groupher_server/cms/community/community_test.exs
index 01ea7bd..4f4770b 100644
--- a/test/groupher_server/cms/community/community_test.exs
+++ b/test/groupher_server/cms/community/community_test.exs
@@ -26,7 +26,8 @@ defmodule GroupherServer.Test.CMS.Community do
   end
 
   describe "[cms community curd]" do
-    test "new created community should have default threads", ~m(user)a do
+    @tag :wip
+    test "new created community should have default threads & locale", ~m(user)a do
       community_attrs = mock_attrs(:community, %{slug: "elixir", user_id: user.id})
       {:ok, community} = CMS.create_community(community_attrs)
 
@@ -35,6 +36,7 @@ defmodule GroupherServer.Test.CMS.Community do
 
       {:ok, community} = ORM.find(Community, community.id, preload: :threads)
 
+      assert community.locale == "en"
       assert community.threads |> length == 5
     end
   end
diff --git a/test/groupher_server_web/mutation/cms/crud_test.exs b/test/groupher_server_web/mutation/cms/crud_test.exs
index 4c138c1..882a87c 100644
--- a/test/groupher_server_web/mutation/cms/crud_test.exs
+++ b/test/groupher_server_web/mutation/cms/crud_test.exs
@@ -196,11 +196,12 @@ defmodule GroupherServer.Test.Mutation.CMS.CRUD do
 
   describe "[mutation cms community]" do
     @create_community_query """
-    mutation($title: String!, $desc: String!, $logo: String!, $slug: String!) {
-      createCommunity(title: $title, desc: $desc, logo: $logo, slug: $slug) {
+    mutation($title: String!, $desc: String!, $logo: String!, $slug: String!, $locale: String) {
+      createCommunity(title: $title, desc: $desc, logo: $logo, slug: $slug, locale: $locale) {
         id
         title
         desc
+        locale
         author {
           id
         }
@@ -212,15 +213,17 @@ defmodule GroupherServer.Test.Mutation.CMS.CRUD do
       }
     }
     """
+    @tag :wip
     test "create community with valid attrs" do
       rule_conn = simu_conn(:user, cms: %{"community.create" => true})
-      variables = mock_attrs(:community)
+      variables = mock_attrs(:community, %{locale: "zh"})
 
       created =
         rule_conn |> mutation_result(@create_community_query, variables, "createCommunity")
 
       {:ok, found} = Community |> ORM.find(created["id"])
       assert created["id"] == to_string(found.id)
+      assert created["locale"] == "zh"
     end
 
     test "created community should have default threads" do
@@ -734,9 +737,10 @@ defmodule GroupherServer.Test.Mutation.CMS.CRUD do
 
   describe "mutation cms community apply" do
     @apply_community_query """
-    mutation($title: String!, $desc: String!, $logo: String!, $slug: String!, $applyMsg: String, $applyCategory: String) {
-      applyCommunity(title: $title, desc: $desc, logo: $logo, slug: $slug, applyMsg: $applyMsg, applyCategory: $applyCategory) {
+    mutation($title: String!, $desc: String!, $logo: String!, $slug: String!, $applyMsg: String, $applyCategory: String, $locale: String) {
+      applyCommunity(title: $title, desc: $desc, logo: $logo, slug: $slug, applyMsg: $applyMsg, applyCategory: $applyCategory, locale: $locale) {
         id
+        locale
         moderators {
           role
           user {
@@ -754,8 +758,9 @@ defmodule GroupherServer.Test.Mutation.CMS.CRUD do
       }
     }
     """
+    @tag :wip
     test "apply a community should have default root user", ~m(user_conn)a do
-      variables = mock_attrs(:community)
+      variables = mock_attrs(:community, %{locale: "it"})
       created = user_conn |> mutation_result(@apply_community_query, variables, "applyCommunity")
 
       {:ok, found} = Community |> ORM.find(created["id"])
@@ -764,6 +769,7 @@ defmodule GroupherServer.Test.Mutation.CMS.CRUD do
 
       moderator = created["moderators"] |> Enum.at(0)
       assert moderator["role"] == "root"
+      assert created["locale"] == "it"
     end
 
     @approve_community_query """
diff --git a/test/groupher_server_web/query/cms/third_part_test.exs b/test/groupher_server_web/query/cms/third_part_test.exs
index b27e780..17c6bd3 100644
--- a/test/groupher_server_web/query/cms/third_part_test.exs
+++ b/test/groupher_server_web/query/cms/third_part_test.exs
@@ -3,7 +3,7 @@ defmodule GroupherServer.Test.Query.CMS.ThirdPart do
 
   alias GroupherServer.Accounts.Model.User
   # alias GroupherServer.CMS
-  alias Helper.ORM
+  # alias Helper.ORM
 
   setup do
     guest_conn = simu_conn(:guest)