diff --git a/app/controllers/hack_user_lastest_codes_controller.rb b/app/controllers/hack_user_lastest_codes_controller.rb
index 655fea471..ff0af5958 100644
--- a/app/controllers/hack_user_lastest_codes_controller.rb
+++ b/app/controllers/hack_user_lastest_codes_controller.rb
@@ -1,9 +1,9 @@
 class HackUserLastestCodesController < ApplicationController
   before_action :require_login, except: [:listen_result]
-  before_action :find_my_hack, only: [:show, :code_debug, :code_submit, :update_code, :sync_code,
+  before_action :find_my_hack, only: [:show, :code_debug, :code_submit, :update_code, :sync_code, :add_notes,
                                       :listen_result, :result, :submit_records, :restore_initial_code]
   before_action :update_user_hack_status, only: [:code_debug, :code_submit]
-  #before_action :require_auth_identity, only: [:restore_initial_code, :sync_code]
+  before_action :require_auth_identity, only: [:add_notes]
   before_action :require_manager_identity, only: [:show, :update_code, :restore_initial_code, :sync_code]
 
   def show
@@ -67,7 +67,6 @@ class HackUserLastestCodesController < ApplicationController
 
   end
 
-
   # 提交记录详情
   def record_detail
     @hack_user = HackUserCode.find params[:id]
@@ -109,6 +108,11 @@ class HackUserLastestCodesController < ApplicationController
 
   end
 
+  def add_notes
+    @my_hack.update_attribute(:notes, params[:notes])
+    render_ok
+  end
+
   private
   def find_my_hack
     @my_hack = HackUserLastestCode.find_by(identifier: params[:identifier])
diff --git a/app/models/hack_user_lastest_code.rb b/app/models/hack_user_lastest_code.rb
index 830f16dde..99582af41 100644
--- a/app/models/hack_user_lastest_code.rb
+++ b/app/models/hack_user_lastest_code.rb
@@ -12,4 +12,6 @@ class HackUserLastestCode < ApplicationRecord
   scope :mine_hack, ->(author_id){ where(user_id: author_id) }
   scope :passed, -> {where(status: 1)}
 
+  validates_length_of :notes, maximum: 5000, message: "笔记不能超过5000个字"
+
 end
diff --git a/app/views/hack_user_lastest_codes/show.json.jbuilder b/app/views/hack_user_lastest_codes/show.json.jbuilder
index 098c24546..a158d074f 100644
--- a/app/views/hack_user_lastest_codes/show.json.jbuilder
+++ b/app/views/hack_user_lastest_codes/show.json.jbuilder
@@ -5,6 +5,7 @@ json.hack do
   json.code @my_hack.code
   json.pass_count @hack.pass_num
   json.submit_count @hack.submit_num
+  json.notes @my_hack.notes
   json.modify_code @modify
   json.comments_count @hack.discusses.count
   json.user_praise @hack.praise_treads.select{|pt| pt.user_id == current_user.id}.length > 0
diff --git a/config/routes.rb b/config/routes.rb
index 7a68ed5e2..f9ed12dbe 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -90,6 +90,7 @@ Rails.application.routes.draw do
         get :submit_records
         post :restore_initial_code
         post :sync_code
+        post :add_notes
       end
 
       collection do
diff --git a/db/migrate/20191226083915_add_notes_hack_user_lastest_codes.rb b/db/migrate/20191226083915_add_notes_hack_user_lastest_codes.rb
new file mode 100644
index 000000000..518e6d610
--- /dev/null
+++ b/db/migrate/20191226083915_add_notes_hack_user_lastest_codes.rb
@@ -0,0 +1,5 @@
+class AddNotesHackUserLastestCodes < ActiveRecord::Migration[5.2]
+  def change
+    add_column :hack_user_lastest_codes, :notes, :longtext
+  end
+end