diff --git a/app/controllers/disciplines_controller.rb b/app/controllers/disciplines_controller.rb
new file mode 100644
index 000000000..09d6f49a0
--- /dev/null
+++ b/app/controllers/disciplines_controller.rb
@@ -0,0 +1,6 @@
+class DisciplinesController < ApplicationController
+
+  def index
+
+  end
+end
\ No newline at end of file
diff --git a/app/models/discipline.rb b/app/models/discipline.rb
index a58f557aa..8d6a16ced 100644
--- a/app/models/discipline.rb
+++ b/app/models/discipline.rb
@@ -1,3 +1,7 @@
 class Discipline < ApplicationRecord
   has_many :sub_disciplines, dependent: :destroy
+
+  has_many :shixun_sub_disciplines, -> { where("shixun = 1") }, class_name: "SubDiscipline"
+  has_many :subject_sub_disciplines, -> { where("subject = 1") }, class_name: "SubDiscipline"
+  has_many :question_sub_disciplines, -> { where("question = 1") }, class_name: "SubDiscipline"
 end
diff --git a/app/models/sub_discipline.rb b/app/models/sub_discipline.rb
index 453cf6071..2f4b612a3 100644
--- a/app/models/sub_discipline.rb
+++ b/app/models/sub_discipline.rb
@@ -1,4 +1,8 @@
 class SubDiscipline < ApplicationRecord
   belongs_to :discipline
   has_many :tag_disciplines, dependent: :destroy
+
+  has_many :shixun_tag_disciplines, -> { where("shixun = 1") }, class_name: "TagDiscipline"
+  has_many :subject_tag_disciplines, -> { where("subject = 1") }, class_name: "TagDiscipline"
+  has_many :question_tag_disciplines, -> { where("question = 1") }, class_name: "TagDiscipline"
 end
diff --git a/app/views/disciplines/index.json.jbuilder b/app/views/disciplines/index.json.jbuilder
new file mode 100644
index 000000000..df33b2e66
--- /dev/null
+++ b/app/views/disciplines/index.json.jbuilder
@@ -0,0 +1,35 @@
+case params[:source]
+when 'subject'
+  disciplines = Discipline.where(subject: 1).includes(subject_sub_disciplines: :subject_tag_disciplines)
+  json.disciplines disciplines do |dis|
+    json.(dis, :id, :name)
+    json.sub_disciplines dis.subject_sub_disciplines do |sub|
+      json.(sub, :id, :name)
+      json.tag_disciplines sub.subject_tag_disciplines do |tag|
+        json.(tag, :id, :name)
+      end
+    end
+  end
+when 'shixun'
+  disciplines = Discipline.where(shixun: 1).includes(shixun_sub_disciplines: :shixun_tag_disciplines)
+  json.disciplines disciplines do |dis|
+    json.(dis, :id, :name)
+    json.sub_disciplines dis.shixun_sub_disciplines do |sub|
+      json.(sub, :id, :name)
+      json.tag_disciplines sub.shixun_tag_disciplines do |tag|
+        json.(tag, :id, :name)
+      end
+    end
+    end
+when 'question'
+  disciplines = Discipline.where(question: 1).includes(question_sub_disciplines: :question_tag_disciplines)
+  json.disciplines disciplines do |dis|
+    json.(dis, :id, :name)
+    json.sub_disciplines dis.question_sub_disciplines do |sub|
+      json.(sub, :id, :name)
+      json.tag_disciplines sub.question_tag_disciplines do |tag|
+        json.(tag, :id, :name)
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index 46c8e9511..9a893f3b9 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -54,6 +54,8 @@ Rails.application.routes.draw do
       end
     end
 
+    resources :disciplines, only: [:index]
+
     resources :item_banks do
       member do
         post :set_public
diff --git a/db/migrate/20191226023559_migrate_disciplines_default.rb b/db/migrate/20191226023559_migrate_disciplines_default.rb
new file mode 100644
index 000000000..6bdbb894f
--- /dev/null
+++ b/db/migrate/20191226023559_migrate_disciplines_default.rb
@@ -0,0 +1,15 @@
+class MigrateDisciplinesDefault < ActiveRecord::Migration[5.2]
+  def change
+    change_column_default :disciplines, :subject, from: nil, to: 1
+    change_column_default :disciplines, :shixun, from: nil, to: 1
+    change_column_default :disciplines, :question, from: nil, to: 1
+
+    change_column_default :sub_disciplines, :subject, from: nil, to: 1
+    change_column_default :sub_disciplines, :shixun, from: nil, to: 1
+    change_column_default :sub_disciplines, :question, from: nil, to: 1
+
+    change_column_default :tag_disciplines, :subject, from: nil, to: 1
+    change_column_default :tag_disciplines, :shixun, from: nil, to: 1
+    change_column_default :tag_disciplines, :question, from: nil, to: 1
+  end
+end