diff --git a/app/models/competition.rb b/app/models/competition.rb
index d8a8318b3..39e4f4dfe 100644
--- a/app/models/competition.rb
+++ b/app/models/competition.rb
@@ -40,6 +40,17 @@ class Competition < ApplicationRecord
     end
   end
 
+  def competition_status
+    if !status
+      com_status = "nearly_published"
+    elsif end_time > Time.now
+      com_status = "progressing"
+    else
+      com_status = "ended"
+    end
+    com_status
+  end
+
   def teacher_staff_num
     teacher_staff ? "#{teacher_staff.minimum}~#{teacher_staff.maximum}" : "--"
   end
diff --git a/app/views/competitions/competitions/index.json.jbuilder b/app/views/competitions/competitions/index.json.jbuilder
index 8e99d754d..810cbfd18 100644
--- a/app/views/competitions/competitions/index.json.jbuilder
+++ b/app/views/competitions/competitions/index.json.jbuilder
@@ -3,6 +3,7 @@ json.competitions do
   json.array! @competitions.each do |competition|
     json.extract! competition, :id, :identifier, :name, :sub_title, :bonus, :description, :mode
 
+    json.competition_status competition.competition_status
     json.visits_count competition.visits
     member_count = @member_count_map&.fetch(competition.id, 0) || competition.team_members.count
     json.member_count member_count.zero? ? 268 : member_count