diff --git a/app/models/report_callbacks.rb b/app/models/report_callbacks.rb
index f58921542ef..ece61720cfc 100644
--- a/app/models/report_callbacks.rb
+++ b/app/models/report_callbacks.rb
@@ -11,6 +11,7 @@ def after_save(report)
     report.update_column(:published_at, report.updated_at) # rubocop:disable Rails/SkipsModelValidations
 
     notify_users(report)
+    notify_to_chat(report)
   end
 
   def after_create(report)
@@ -74,4 +75,12 @@ def create_following_watch(report, follower)
   def delete_notification(report)
     Notification.where(link: "/reports/#{report.id}").destroy_all
   end
+
+  def notify_to_chat(report)
+    ChatNotifier.message(<<~TEXT, webhook_url: ENV['DISCORD_REPORT_WEBHOOK_URL'])
+      #{report.user.login_name}さんが#{I18n.l report.reported_on}の日報を公開しました。
+      タイトル：「#{report.title}」
+      URL： https://bootcamp.fjord.jp/reports/#{report.id}
+    TEXT
+  end
 end
diff --git a/test/system/reports_test.rb b/test/system/reports_test.rb
index f38f3eb7e3b..eff8adbbb16 100644
--- a/test/system/reports_test.rb
+++ b/test/system/reports_test.rb
@@ -635,4 +635,30 @@ def wait_for_watch_change
     visit_with_auth report_path(reports(:report32)), 'komagata'
     assert_no_selector '.a-page-notice.is-only-mentor.is-danger', text: '9日ぶりの日報です'
   end
+
+  test 'notify to chat after create a report' do
+    visit_with_auth '/reports/new', 'kimura'
+    within('form[name=report]') do
+      fill_in('report[title]', with: 'test title')
+      fill_in('report[description]', with: 'test')
+      fill_in('report[reported_on]', with: Time.current)
+    end
+
+    first('.learning-time').all('.learning-time__started-at select')[0].select('07')
+    first('.learning-time').all('.learning-time__started-at select')[1].select('30')
+    first('.learning-time').all('.learning-time__finished-at select')[0].select('08')
+    first('.learning-time').all('.learning-time__finished-at select')[1].select('30')
+
+    mock_log = []
+    stub_info = proc { |i| mock_log << i }
+
+    Rails.logger.stub(:info, stub_info) do
+      click_button '提出'
+    end
+
+    assert_text '日報を保存しました。'
+    assert_text Time.current.strftime('%Y年%m月%d日')
+    assert_text 'Watch中'
+    assert_match 'Message to Discord.', mock_log.to_s
+  end
 end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index b06cfc13fd5..d23aa74969b 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -4,6 +4,7 @@
 require_relative '../config/environment'
 require 'rails/test_help'
 require 'capybara/rails'
+require 'minitest/mock'
 require 'minitest/retry'
 require 'supports/api_helper'
 require 'supports/vcr_helper'