diff --git a/app/controllers/concerns/controller_rescue_handler.rb b/app/controllers/concerns/controller_rescue_handler.rb
index dde6c4a8d..f7a12b5a7 100644
--- a/app/controllers/concerns/controller_rescue_handler.rb
+++ b/app/controllers/concerns/controller_rescue_handler.rb
@@ -24,7 +24,7 @@ module ControllerRescueHandler
     rescue_from ActiveRecord::RecordInvalid do |ex|
       render_error(ex.record.errors.full_messages.join(','))
     end
-    rescue_from StandardError do |ex|
+    rescue_from RuntimeError do |ex|
       render_error(ex.message)
     end
   end
diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index d819b1039..f23be51d5 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -386,6 +386,7 @@ class CoursesController < ApplicationController
   def destroy
     if @course.is_delete == 0
       @course.delete!
+      Tiding.where(belong_container: @course).update_all(is_delete: 1)
       Tiding.create!(user_id: current_user.id, trigger_user_id: current_user.id, container_id: @course.id,
                      container_type: 'DeleteCourse', tiding_type: 'System', belong_container: @course, extra: @course.name)
       normal_status(0, "成功")
diff --git a/app/controllers/tidings_controller.rb b/app/controllers/tidings_controller.rb
index 9305046b0..91d6c095d 100644
--- a/app/controllers/tidings_controller.rb
+++ b/app/controllers/tidings_controller.rb
@@ -5,7 +5,7 @@ class TidingsController < ApplicationController
   after_action :update_onclick_time!, only: [:index]
 
   def index
-    tidings = current_user.tidings
+    tidings = current_user.tidings.visible
     @onclick_time = current_user.click_time
 
     tiding_types =
@@ -21,7 +21,7 @@ class TidingsController < ApplicationController
 
     tidings = tidings.where(container_type: 'JoinCourse', status: 0) if params[:type] == 'course_apply'
     # @course_apply_count = tidings.where("created_at > '#{@onclick_time}'").where(container_type: 'JoinCourse', status: 0).count
-    @course_apply_count = tidings.where("created_at > '#{@onclick_time}'").where(container_type: 'JoinCourse', status: 0).count
+    @course_apply_count = tidings.where(container_type: 'JoinCourse', status: 0).count
 
     tidings = tidings.where(container_type: 'ProjectPackage') if params[:type] == 'project_package'
 
diff --git a/app/models/tiding.rb b/app/models/tiding.rb
index 02692085a..aa570f5c0 100644
--- a/app/models/tiding.rb
+++ b/app/models/tiding.rb
@@ -7,6 +7,8 @@ class Tiding < ApplicationRecord
 
   has_many :attachments, as: :container
 
+  scope :visible, -> { where(is_delete: 0) }
+
   def identifier
     value = nil
 
diff --git a/db/migrate/20200210111249_add_is_delete_to_tiding.rb b/db/migrate/20200210111249_add_is_delete_to_tiding.rb
new file mode 100644
index 000000000..94a53145e
--- /dev/null
+++ b/db/migrate/20200210111249_add_is_delete_to_tiding.rb
@@ -0,0 +1,5 @@
+class AddIsDeleteToTiding < ActiveRecord::Migration[5.2]
+  def change
+    add_column :tidings, :is_delete, :boolean, default: 0
+  end
+end
diff --git a/db/migrate/20200210111308_update_tidings_delete_status.rb b/db/migrate/20200210111308_update_tidings_delete_status.rb
new file mode 100644
index 000000000..f05e409bd
--- /dev/null
+++ b/db/migrate/20200210111308_update_tidings_delete_status.rb
@@ -0,0 +1,5 @@
+class UpdateTidingsDeleteStatus < ActiveRecord::Migration[5.2]
+  def change
+    Tiding.where.not(container_type: 'DeleteCourse').where(belong_container_type: "Course", belong_container_id: Course.where(is_delete: 1).pluck(:id)).update_all(is_delete: 1)
+  end
+end
diff --git a/db/migrate/20200210112333_delete_column_tiding.rb b/db/migrate/20200210112333_delete_column_tiding.rb
new file mode 100644
index 000000000..1bdc91897
--- /dev/null
+++ b/db/migrate/20200210112333_delete_column_tiding.rb
@@ -0,0 +1,5 @@
+class DeleteColumnTiding < ActiveRecord::Migration[5.2]
+  def change
+    remove_column :tidings, :delete
+  end
+end