diff --git a/app/controllers/api/v1/rooms_controller.rb b/app/controllers/api/v1/rooms_controller.rb
index 3514a90..cec28e1 100644
--- a/app/controllers/api/v1/rooms_controller.rb
+++ b/app/controllers/api/v1/rooms_controller.rb
@@ -49,22 +49,16 @@ def create
       #     => save gaas_token in redis: type: list, key 'room:#{room.id}:gaas_tokens', value: [gaas_token1, gaas_token2, ...]
       #   when close room, call gaas end game if possible
       def destroy
-        return render json: { error: 'Room not found' }, status: :not_found unless @room
-        return render json: { error: 'Room is already closed' }, status: :unprocessable_entity if @room.closed?
-
-        user = Visitor.find(@jwt_request['sub'])
-
-        unless user.owner_of?(@room)
-          return render json: { error: 'You are not the owner of this room' },
-                        status: :forbidden
+        case result = Domain::SplitRoom::Command::Close.new(room: @room, user_request: @jwt_request).call.error
+        in nil then head :ok
+        in Domain::SplitRoom::Command::RoomIsRequired
+          render json: { error: 'Room not found' }, status: :not_found
+        in Domain::SplitRoom::Command::UserIsRequired
+          render json: { error: 'User not found' }, status: :unauthorized
+        in Domain::SplitRoom::Command::UserIsNotOwner
+          render json: { error: 'You are not the owner of this room' }, status: :forbidden
+        else render json: { error: result.message }, status: :unprocessable_entity
         end
-
-        @room.call_gaas_end_game(@jwt_request[:gaas_auth0_token])
-        @room.close
-
-        Domain::CloseRoomEvent.new(room_id: @room.id).dispatch
-
-        head :ok
       end
 
       # POST /api/v1/rooms/:id/ai_players
diff --git a/app/lib/domain/split_room/command/close.rb b/app/lib/domain/split_room/command/close.rb
new file mode 100644
index 0000000..ebd9fa4
--- /dev/null
+++ b/app/lib/domain/split_room/command/close.rb
@@ -0,0 +1,46 @@
+module Domain
+  module SplitRoom
+    module Command
+      class Close
+        def initialize(params = {})
+          @room = params[:room]
+          @user = Visitor.find_by(id: params.dig(:user_request, :sub))
+          @gaas_auth0_token = params.dig(:user_request, :gaas_auth0_token)
+          @error = nil
+        end
+
+        attr_reader :room, :user, :gaas_auth0_token
+        attr_accessor :error
+
+        def call
+          validate!
+          return self unless error.nil?
+
+          # TODO: Refactor the integration with GAAS
+          room.call_gaas_end_game(gaas_auth0_token)
+          room.close
+
+          Domain::CloseRoomEvent.new(room_id: room.id).dispatch
+
+          self
+        end
+
+        private
+
+        def validate!
+          self.error = RoomIsRequired.new and return if room.nil?
+          self.error = UserIsRequired.new and return if user.nil?
+          self.error = UserIsNotOwner.new and return unless can_close_the_room?
+        end
+
+        def can_close_the_room?
+          room.owner_id == user.id || user.role_admin?
+        end
+      end
+
+      class RoomIsRequired < StandardError; end
+      class UserIsRequired < StandardError; end
+      class UserIsNotOwner < StandardError; end
+    end
+  end
+end
diff --git a/spec/requests/api/v1/rooms_spec.rb b/spec/requests/api/v1/rooms_spec.rb
index b51572a..3764a1a 100644
--- a/spec/requests/api/v1/rooms_spec.rb
+++ b/spec/requests/api/v1/rooms_spec.rb
@@ -109,6 +109,8 @@
   end
 
   path "/api/#{version}/rooms/{id}/close" do
+    let(:id) { room.id }
+
     post '關閉房間' do
       tags 'Rooms'
       # description ""
@@ -117,12 +119,40 @@
       parameter name: :id, in: :path, type: :string
 
       response 200, 'ok.' do
-        xit
+        before { room.update(owner_id: user.id) }
+
+        run_test!
+      end
+
+      response 404, 'not found.' do
+        let(:id) { 'invalid' }
+
+        run_test!
+      end
+
+      response 401, 'unauthorized.' do
+        let(:Authorization) { nil }
+
+        run_test!
+      end
+
+      response 403, 'forbidden.' do
+        run_test!
+      end
+
+      context 'when the user is admin' do
+        before { user.role_admin! }
+
+        response 200, 'ok.' do
+          run_test!
+        end
       end
     end
   end
 
   path "/api/#{version}/rooms/{id}/knock-knock" do
+    let(:id) { room.id }
+
     get '取得加入房間 token' do
       tags 'Rooms'
       # description ""
@@ -130,8 +160,6 @@
       produces 'application/json'
       parameter name: :id, in: :path, type: :string
 
-      let(:id) { room.id }
-
       response 200, 'ok.' do
         run_test! do |response|
           expect(JSON.parse(response.body)).to have_key('token')