diff --git a/app/controllers/competitions/competitions_controller.rb b/app/controllers/competitions/competitions_controller.rb
index 77159fdaf..30df949f6 100644
--- a/app/controllers/competitions/competitions_controller.rb
+++ b/app/controllers/competitions/competitions_controller.rb
@@ -1,6 +1,7 @@
 class Competitions::CompetitionsController < Competitions::BaseController
   skip_before_action :require_login
   before_action :allow_visit, except: [:index]
+  before_action :require_admin, only: [:update]
 
   def index
     # 已上架 或者 即将上架
@@ -25,10 +26,16 @@ class Competitions::CompetitionsController < Competitions::BaseController
   end
 
   def show
+    @competition = current_competition
   end
 
-  def common_header
+  def update
+    @competition.update_attributes!(introduction: params[:introduction])
+    normal_status("更新成功")
+  end
 
+  def common_header
+    @competition = current_competition
   end
 
   private
@@ -38,9 +45,6 @@ class Competitions::CompetitionsController < Competitions::BaseController
   end
 
   def allow_visit
-    unless current_competition.published? || admin_or_business?
-      render_forbidden
-      return
-    end
+    render_forbidden unless current_competition.published? || admin_or_business?
   end
 end
\ No newline at end of file
diff --git a/app/views/competitions/competitions/common_header.json.jbuilder b/app/views/competitions/competitions/common_header.json.jbuilder
new file mode 100644
index 000000000..f172dae86
--- /dev/null
+++ b/app/views/competitions/competitions/common_header.json.jbuilder
@@ -0,0 +1,12 @@
+json.extract! @competition, :id, :name, :sub_title, :identifier, :bonus, :mode
+json.visits_count @competition.visits
+member_count = @competition.team_members.count
+json.member_count member_count.zero? ? 268 : member_count
+
+json.start_time @competition.start_time&.strftime("%Y-%m-%d")
+json.end_time @competition.end_time&.strftime("%Y-%m-%d")
+json.enroll_end_time @competition.enroll_end_time&.strftime("%Y-%m-%d %H:%M:%S")
+
+json.published @competition.published?
+json.nearly_published @competition.published_at.present?
+
diff --git a/app/views/competitions/competitions/index.json.jbuilder b/app/views/competitions/competitions/index.json.jbuilder
index 4b8390a7d..8e99d754d 100644
--- a/app/views/competitions/competitions/index.json.jbuilder
+++ b/app/views/competitions/competitions/index.json.jbuilder
@@ -1,7 +1,7 @@
 json.count @count
 json.competitions do
   json.array! @competitions.each do |competition|
-    json.extract! competition, :id, :identifier, :name, :sub_title, :bonus, :description
+    json.extract! competition, :id, :identifier, :name, :sub_title, :bonus, :description, :mode
 
     json.visits_count competition.visits
     member_count = @member_count_map&.fetch(competition.id, 0) || competition.team_members.count
@@ -12,18 +12,18 @@ json.competitions do
     json.nearly_published competition.published_at.present?
     json.single_stage (@stage_count_map&.fetch(competition.id, 0) || competition.competition_stages.count) == 1
 
-    json.start_time competition.display_start_time
-    json.end_time competition.display_end_time
-    json.enroll_end_time competition.display_enroll_end_time
+    json.start_time competition.start_time&.strftime("%Y-%m-%d")
+    json.end_time competition.end_time&.strftime("%Y-%m-%d")
+    json.enroll_end_time competition.enroll_end_time&.strftime("%Y-%m-%d %H:%M:%S")
 
-    section = competition.current_stage_section
-    if section
-      json.current_stage do
-
-        json.name section.competition_stage.name
-        json.start_time section.display_start_time
-        json.end_time section.display_end_time
-      end
-    end
+    # section = competition.current_stage_section
+    # if section
+    #   json.current_stage do
+    #
+    #     json.name section.competition_stage.name
+    #     json.start_time section.display_start_time
+    #     json.end_time section.display_end_time
+    #   end
+    # end
   end
 end
\ No newline at end of file
diff --git a/app/views/competitions/competitions/show.json.jbuilder b/app/views/competitions/competitions/show.json.jbuilder
index 18216ee92..f96949398 100644
--- a/app/views/competitions/competitions/show.json.jbuilder
+++ b/app/views/competitions/competitions/show.json.jbuilder
@@ -1,36 +1,2 @@
-competition = current_competition
-json.extract! competition, :id, :name, :sub_title, :identifier
-
-json.start_time competition.display_start_time
-json.end_time competition.display_end_time
-json.enroll_end_time competition.display_enroll_end_time
-
-json.images do
-  json.array! competition.attachments, partial: 'attachments/attachment_simple', as: :attachment
-end
-
-json.competition_stages do
-  stages = competition.competition_stages.includes(competition_stage_sections: :competition_entries)
-  json.array! stages.each do |stage|
-    json.extract! stage, :id, :name
-
-    json.sections do
-      json.array! stage.competition_stage_sections.each do |section|
-        json.extract! section, :id, :name
-
-        decorator_section = ActiveDecorator::Decorator.instance.decorate(section)
-        json.start_time decorator_section.display_start_time
-        json.end_time decorator_section.display_end_time
-
-        is_start = section.start_time > Time.now
-        json.entries do
-          json.array! section.competition_entries.each do |entry|
-            json.extract! entry, :id, :name
-
-            json.url is_start ? entry.url : ''
-          end
-        end
-      end
-    end
-  end
-end
\ No newline at end of file
+json.extract! @competition, :id, :introduction
+json.image_url url_to_avatar(@competition)
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index a2e7337b1..f9efaf794 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -781,7 +781,7 @@ Rails.application.routes.draw do
     resources :repertoires, only: [:index]
 
     scope module: :competitions do
-      resources :competitions, only: [:index, :show] do
+      resources :competitions, only: [:index, :show, :update] do
         resources :competition_modules, only: [:index, :show, :update]
         resource :competition_staff
         resources :competition_teams, only: [:index, :show] do