diff --git a/app/assets/javascripts/course_stages.js b/app/assets/javascripts/course_stages.js
new file mode 100644
index 000000000..dee720fac
--- /dev/null
+++ b/app/assets/javascripts/course_stages.js
@@ -0,0 +1,2 @@
+// Place all the behaviors and hooks related to the matching controller here.
+// All this logic will automatically be available in application.js.
diff --git a/app/assets/stylesheets/course_stages.scss b/app/assets/stylesheets/course_stages.scss
new file mode 100644
index 000000000..faa60b4b0
--- /dev/null
+++ b/app/assets/stylesheets/course_stages.scss
@@ -0,0 +1,3 @@
+// Place all the styles related to the course_stages controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/
diff --git a/app/controllers/course_stages_controller.rb b/app/controllers/course_stages_controller.rb
new file mode 100644
index 000000000..92e44a336
--- /dev/null
+++ b/app/controllers/course_stages_controller.rb
@@ -0,0 +1,105 @@
+class CourseStagesController < ApplicationController
+  before_action :require_login
+  before_action :find_course, only: [:create]
+  before_action :find_course_stage, only: [:update, :destroy, :edit, :up_position, :down_position]
+  before_action :user_course_identity, :teacher_allowed
+
+  def create
+    ActiveRecord::Base.transaction do
+      begin
+        @stage = CourseStage.new(stage_params)
+        @stage.course_id = @course.id
+        @stage.position = @course.course_stages.count + 1
+        @stage.save!
+        unless params[:shixun_id].blank?
+          shixuns = Shixun.where(id: params[:shixun_id]).order("field(id, #{params[:shixun_id].join(",")})")
+          shixuns.each do |shixun|
+            CourseStageShixun.create!(course_stage_id: @stage.id, course_id: @course.id, shixun_id: shixun.id, position: @stage.course_stage_shixuns.count + 1)
+          end
+        end
+        normal_status("创建成功")
+      rescue Exception => e
+        uid_logger_error(e.message)
+        tip_exception(e.message)
+        raise ActiveRecord::Rollback
+      end
+    end
+  end
+
+  def edit
+
+  end
+
+  def update
+    ActiveRecord::Base.transaction do
+      begin
+        @stage.update_attributes!(stage_params)
+        @stage.course_stage_shixuns.destroy_all
+        unless params[:shixun_id].blank?
+          params[:shixun_id].each do |shixun_id|
+            shixun = Shixun.where(id: shixun_id).first
+            @stage.course_stage_shixuns.create!(course_id: @course.id, shixun_id: shixun.id, position: @stage.course_stage_shixuns.count + 1) if shixun.present?
+          end
+        end
+        normal_status("更新成功")
+      rescue Exception => e
+        uid_logger_error(e.message)
+        tip_exception(e.message)
+        raise ActiveRecord::Rollback
+      end
+    end
+  end
+
+  def destroy
+    ActiveRecord::Base.transaction do
+      @course.course_stages.where("position > ?", @stage.position).update_all("position = position - 1")
+      @stage.destroy!
+      normal_status("删除成功")
+    end
+  end
+
+  def up_position
+    ActiveRecord::Base.transaction do
+      begin
+        position = @stage.position
+        tip_exception("第一章不能向上移动") if @stage.position == 1
+        pre_stage = @course.course_stages.where(position: position - 1).first
+        pre_stage.update_attributes(position: position)
+        @stage.update_attributes(position: position - 1)
+        normal_status("更新成功")
+      rescue Exception => e
+        uid_logger("stage up failed: #{e.message}")
+        raise ActiveRecord::Rollback
+      end
+    end
+  end
+
+  def down_position
+    ActiveRecord::Base.transaction do
+      begin
+        position = @stage.position
+        rails "最后一章不能向下移动" if @stage.position == @course.course_stages.count
+        next_stage = @course.course_stages.where(position: position + 1).first
+        next_stage.update_attributes(position: position)
+        @stage.update_attributes(position: position + 1)
+        normal_status("更新成功")
+      rescue Exception => e
+        uid_logger("stage up failed: #{e.message}")
+        raise ActiveRecord::Rollback
+      end
+    end
+  end
+
+  private
+
+  def find_course_stage
+    @stage = CourseStage.find_by!(id: params[:id])
+    @course = @stage.course
+  end
+
+  def stage_params
+    tip_exception("章节名称不能为空") if params[:name].blank?
+    params.permit(:name, :description)
+  end
+
+end
diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index d9ddcf2d1..bec53f993 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -167,6 +167,8 @@ class CoursesController < ApplicationController
             end
 
             Inform.create(container: @course, description: @subject.learning_notes, name: "学习须知")
+
+            @course.create_stages @course.subject
           end
 
           course_module_types = params[:course_module_types]
@@ -266,9 +268,9 @@ class CoursesController < ApplicationController
 
   def online_learning
     @subject = @course.subject
-    @stages = @subject&.stages
+    @stages = @course.course_stages
     @user = current_user
-    @start_learning = @user_course_identity == Course::STUDENT && @subject&.learning?(current_user.id)
+    @start_learning = @user_course_identity == Course::STUDENT && @course.learning?(current_user.id)
   end
 
   def search_course_list
diff --git a/app/controllers/subjects_controller.rb b/app/controllers/subjects_controller.rb
index 7c76748b1..952301053 100644
--- a/app/controllers/subjects_controller.rb
+++ b/app/controllers/subjects_controller.rb
@@ -442,7 +442,6 @@ class SubjectsController < ApplicationController
   # 用户进展和获取的标签
   def user_subject_progress challenge_ids
     pass_games = Game.select(:id, :cost_time, :challenge_id).where(status: 2, user_id: current_user.id, challenge_id: challenge_ids) if current_user.logged?
-    @all_score = Challenge.where(id: challenge_ids).sum(:score)
 
     # 如果没有通关的，没必要再继续统计了
     if pass_games.blank?
@@ -451,6 +450,7 @@ class SubjectsController < ApplicationController
       @time = 0
       @user_tags = []
     else
+      @all_score = Challenge.where(id: challenge_ids).size
       pass_challenge_ids = pass_games.map(&:challenge_id).uniq # 按道理是不用去重的，但是历史数据与重复
       subject_challenge_count = @subject.shixuns.sum(:challenges_count)
       # 用户通关获得的标签
@@ -460,7 +460,7 @@ class SubjectsController < ApplicationController
           subject_challenge_count == 0 ? 0 :
               ((pass_challenge_ids.size.to_f / subject_challenge_count).round(2) * 100).to_i
       # 用户通关分数
-      @my_score = Challenge.where(id: pass_challenge_ids).pluck(:score).sum
+      @my_score = Challenge.where(id: pass_challenge_ids).size
       @time = pass_games.map(&:cost_time).sum
     end
 
diff --git a/app/helpers/course_stages_helper.rb b/app/helpers/course_stages_helper.rb
new file mode 100644
index 000000000..7ebb68d9a
--- /dev/null
+++ b/app/helpers/course_stages_helper.rb
@@ -0,0 +1,2 @@
+module CourseStagesHelper
+end
diff --git a/app/helpers/courses_helper.rb b/app/helpers/courses_helper.rb
index cdb3225d6..6f6c76d04 100644
--- a/app/helpers/courses_helper.rb
+++ b/app/helpers/courses_helper.rb
@@ -269,10 +269,10 @@ module CoursesHelper
     group_info
   end
 
-  def last_subject_shixun user_id, subject
-    myshixun = Myshixun.where(user_id: user_id, shixun_id: subject&.shixuns).order("updated_at desc").first
+  def last_subject_shixun user_id, course
+    myshixun = Myshixun.where(user_id: user_id, shixun_id: course.shixuns).order("updated_at desc").first
     return "" unless myshixun
-    stage_shixun = subject&.stage_shixuns.where(shixun_id: myshixun.shixun_id).take
-    progress = stage_shixun&.stage&.position.to_s + "-" + stage_shixun&.position.to_s + " " + myshixun.shixun&.name
+    stage_shixun = course.course_stage_shixuns.where(shixun_id: myshixun.shixun_id).take
+    progress = stage_shixun&.course_stage&.position.to_s + "-" + stage_shixun&.position.to_s + " " + myshixun.shixun&.name
   end
 end
diff --git a/app/models/course.rb b/app/models/course.rb
index 54d897b07..c66c597d4 100644
--- a/app/models/course.rb
+++ b/app/models/course.rb
@@ -70,6 +70,11 @@ class Course < ApplicationRecord
   has_many :course_acts, class_name: 'CourseActivity', as: :course_act, dependent: :destroy
   has_many :tidings, as: :container, dependent: :destroy
 
+  # 开放课堂
+  has_many :course_stages, -> { order("course_stages.position ASC") }, dependent: :destroy
+  has_many :course_stage_shixuns, dependent: :destroy
+  has_many :shixuns, through: :course_stage_shixuns
+
   # 老版的members弃用  现用course_members
   has_many :members
 
@@ -333,6 +338,28 @@ class Course < ApplicationRecord
     teacher_power_courses
   end
 
+  def create_stages subject
+    if subject
+      subject.stages.each do |stage|
+        new_stage = CourseStage.create!(course_id: id, name: stage.name, description: stage.description, position: stage.position)
+        stage.stage_shixuns.each do |stage_shixun|
+          CourseStageShixun.create!(course_id: id, course_stage_id: new_stage.id, shixun_id: stage_shixun.shixun_id, position: stage_shixun.position)
+        end
+      end
+    end
+  end
+
+  def learning? user_id
+    Myshixun.where(user_id: user_id, shixun_id: shixuns).exists?
+  end
+
+  def my_subject_progress
+    my_challenge_count = Game.joins(:challenge).where(user_id: User.current.id, status: 2, challenges: {shixun_id: shixuns.published_closed}).
+      pluck(:challenge_id).uniq.size
+    course_challeng_count = course.shixuns.pluck(:challenges_count).sum
+    count = course_challeng_count == 0 ? 0 : ((my_challenge_count.to_f / course_challeng_count).round(2) * 100).to_i
+  end
+
   private
 
   #创建课程后，给该用户发送消息
diff --git a/app/models/course_stage.rb b/app/models/course_stage.rb
new file mode 100644
index 000000000..f105e25f6
--- /dev/null
+++ b/app/models/course_stage.rb
@@ -0,0 +1,9 @@
+class CourseStage < ApplicationRecord
+  belongs_to :course
+
+  has_many :course_stage_shixuns, -> { order("course_stage_shixuns.position ASC") }, dependent: :destroy
+  has_many :shixuns, :through => :course_stage_shixuns
+
+  validates :name, length: { maximum: 60 }
+  validates :description, length: { maximum: 300 }
+end
diff --git a/app/models/course_stage_shixun.rb b/app/models/course_stage_shixun.rb
new file mode 100644
index 000000000..6ab2707a4
--- /dev/null
+++ b/app/models/course_stage_shixun.rb
@@ -0,0 +1,5 @@
+class CourseStageShixun < ApplicationRecord
+  belongs_to :course
+  belongs_to :course_stage, counter_cache: :shixuns_count
+  belongs_to :shixun
+end
diff --git a/app/services/users/apply_professional_auth_service.rb b/app/services/users/apply_professional_auth_service.rb
index 07afe18ae..3ba9fbafd 100644
--- a/app/services/users/apply_professional_auth_service.rb
+++ b/app/services/users/apply_professional_auth_service.rb
@@ -38,7 +38,11 @@ class Users::ApplyProfessionalAuthService < ApplicationService
 
       move_image_file! unless params[:upload_image].to_s == 'false'
 
-      sms_notify_admin
+      # sms_cache = Rails.cache.read("apply_pro_certification")
+      # if sms_cache.nil?
+      #   sms_notify_admin
+        Rails.cache.write("apply_pro_certification", 1)
+      # end
     end
   end
 
diff --git a/app/views/course_stages/edit.json.jbuilder b/app/views/course_stages/edit.json.jbuilder
new file mode 100644
index 000000000..f76efb15f
--- /dev/null
+++ b/app/views/course_stages/edit.json.jbuilder
@@ -0,0 +1,11 @@
+json.stage_id @stage.id
+json.stage_name @stage.name
+json.stage_description @stage.description
+json.delete_path "/course_stages/#{@stage.id}"
+json.shixuns_list do
+  json.array! @stage.shixuns.each do |shixun|
+    json.shixun_identifier shixun.identifier
+    json.shixun_name shixun.name
+    json.shixun_id shixun.id
+  end
+end
\ No newline at end of file
diff --git a/app/views/courses/online_learning.json.jbuilder b/app/views/courses/online_learning.json.jbuilder
index bec8ff301..9c87743ee 100644
--- a/app/views/courses/online_learning.json.jbuilder
+++ b/app/views/courses/online_learning.json.jbuilder
@@ -2,10 +2,10 @@ json.stages @stages do |stage|
   json.partial! 'stages/stage', locals: {stage: stage, user:@user, subject:@subject}
 end
 
-json.description @subject&.description
+# json.description @subject&.description
 
 json.start_learning @start_learning
 
-json.learned @start_learning ? @subject&.my_subject_progress : 0
+json.learned @start_learning ? @course.my_subject_progress : 0
 
 json.last_shixun @start_learning ? last_subject_shixun(@user.id, @subject) : ""
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index 34e60f089..745233a80 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -373,6 +373,13 @@ Rails.application.routes.draw do
         get 'search_slim'
       end
 
+      resources :course_stages, shallow: true do
+        member do
+          post :up_position
+          post :down_position
+        end
+      end
+
       resources :polls, only:[:index,:new,:create] do
         collection do
           post :publish   # 立即发布
diff --git a/db/migrate/20190910061807_create_course_stages.rb b/db/migrate/20190910061807_create_course_stages.rb
new file mode 100644
index 000000000..c664b7f92
--- /dev/null
+++ b/db/migrate/20190910061807_create_course_stages.rb
@@ -0,0 +1,13 @@
+class CreateCourseStages < ActiveRecord::Migration[5.2]
+  def change
+    create_table :course_stages do |t|
+      t.references :course, index: true
+      t.string :name
+      t.text :description
+      t.integer :position
+      t.integer :shixuns_count
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/migrate/20190910062710_create_course_stage_shixuns.rb b/db/migrate/20190910062710_create_course_stage_shixuns.rb
new file mode 100644
index 000000000..04512c7da
--- /dev/null
+++ b/db/migrate/20190910062710_create_course_stage_shixuns.rb
@@ -0,0 +1,12 @@
+class CreateCourseStageShixuns < ActiveRecord::Migration[5.2]
+  def change
+    create_table :course_stage_shixuns do |t|
+      t.references :course, index: true
+      t.references :course_stage, index: true
+      t.references :shixun, index: true
+      t.integer :position
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/migrate/20190910063345_migrate_course_stages.rb b/db/migrate/20190910063345_migrate_course_stages.rb
new file mode 100644
index 000000000..0aae05103
--- /dev/null
+++ b/db/migrate/20190910063345_migrate_course_stages.rb
@@ -0,0 +1,14 @@
+class MigrateCourseStages < ActiveRecord::Migration[5.2]
+  def change
+    Course.where(excellent: 1).each do |course|
+      if course.subject
+        course.subject.stages.each do |stage|
+          new_stage = CourseStage.create!(course_id: course.id, name: stage.name, description: stage.description, position: stage.position)
+          stage.stage_shixuns.each do |stage_shixun|
+            CourseStageShixun.create!(course_id: course.id, course_stage_id: new_stage.id, shixun_id: stage_shixun.shixun_id, position: stage_shixun.position)
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/spec/controllers/course_stages_controller_spec.rb b/spec/controllers/course_stages_controller_spec.rb
new file mode 100644
index 000000000..e63a2b6a4
--- /dev/null
+++ b/spec/controllers/course_stages_controller_spec.rb
@@ -0,0 +1,5 @@
+require 'rails_helper'
+
+RSpec.describe CourseStagesController, type: :controller do
+
+end
diff --git a/spec/helpers/course_stages_helper_spec.rb b/spec/helpers/course_stages_helper_spec.rb
new file mode 100644
index 000000000..bb1081a10
--- /dev/null
+++ b/spec/helpers/course_stages_helper_spec.rb
@@ -0,0 +1,15 @@
+require 'rails_helper'
+
+# Specs in this file have access to a helper object that includes
+# the CourseStagesHelper. For example:
+#
+# describe CourseStagesHelper do
+#   describe "string concat" do
+#     it "concats two strings with spaces" do
+#       expect(helper.concat_strings("this","that")).to eq("this that")
+#     end
+#   end
+# end
+RSpec.describe CourseStagesHelper, type: :helper do
+  pending "add some examples to (or delete) #{__FILE__}"
+end
diff --git a/spec/models/course_stage_shixun_spec.rb b/spec/models/course_stage_shixun_spec.rb
new file mode 100644
index 000000000..716af2b97
--- /dev/null
+++ b/spec/models/course_stage_shixun_spec.rb
@@ -0,0 +1,5 @@
+require 'rails_helper'
+
+RSpec.describe CourseStageShixun, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end
diff --git a/spec/models/course_stage_spec.rb b/spec/models/course_stage_spec.rb
new file mode 100644
index 000000000..06c711908
--- /dev/null
+++ b/spec/models/course_stage_spec.rb
@@ -0,0 +1,5 @@
+require 'rails_helper'
+
+RSpec.describe CourseStage, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end