diff --git a/app/controllers/trainings_controller.rb b/app/controllers/trainings_controller.rb
index 647be129..2f88d634 100644
--- a/app/controllers/trainings_controller.rb
+++ b/app/controllers/trainings_controller.rb
@@ -109,6 +109,7 @@ class TrainingsController < ApplicationController
     @training.training_type = @training_type
     if @training_type == 3
       @training.research_field = params[:research_field].reject(&:blank?).uniq.join(",")
+      @training.training_category = params[:training_category]
     end
     @training.openid = session[:wechat_open_id]
     @training.save!
@@ -298,9 +299,6 @@ class TrainingsController < ApplicationController
     end
   end
 
-
-  private
-
   def js_function_call
     begin
       yield if block_given?
diff --git a/app/models/training.rb b/app/models/training.rb
index a5794de2..7c1333be 100644
--- a/app/models/training.rb
+++ b/app/models/training.rb
@@ -21,4 +21,8 @@ class Training < ActiveRecord::Base
     pay? && training_payinfo.payed?
   end
 
+  def research_field_include?(str)
+    research_field.present? && research_field.split(',').include?(str)
+  end
+
 end
diff --git a/app/views/trainings/enroll.html.erb b/app/views/trainings/enroll.html.erb
index e926ed75..3acb9c3f 100644
--- a/app/views/trainings/enroll.html.erb
+++ b/app/views/trainings/enroll.html.erb
@@ -164,21 +164,21 @@
       <li class="clearfix infoBar">
         <span class="left_tag fl">大数据方向</span>
         <span class="fr">
-          <input type="radio" name="type" value="type1" id="type_1" class="magic-radio">
+          <input type="radio" name="training_category" value="large_data" id="type_1" class="magic-radio">
           <label for="type_1" style="top:8px">&nbsp;</label>
         </span>
       </li>
       <li class="clearfix infoBar">
         <span class="left_tag fl">人工智能方向</span>
         <span class="fr">
-          <input type="radio" name="type" value="type2" id="type_2" class="magic-radio">
+          <input type="radio" name="training_category" value="ai" id="type_2" class="magic-radio">
           <label for="type_2" style="top:8px">&nbsp;</label>
         </span>
       </li>
       <li class="clearfix infoBar">
         <span class="left_tag fl">大数据+人工智能方向</span>
         <span class="fr">
-          <input type="radio" name="type" value="type3" id="type_3" class="magic-radio">
+          <input type="radio" name="training_category" value="large_data_and_ai" id="type_3" class="magic-radio">
           <label for="type_3" style="top:8px">&nbsp;</label>
         </span>
       </li>
@@ -187,49 +187,49 @@
       <li class="clearfix infoBar">
         <span class="left_tag fl">机器学习/深度学习</span>
         <span class="fr">
-          <input type="checkbox" name="research_field[]" value="机器学习/深度学习" <%= @training.research_field.split(",").include?("机器学习/深度学习") ? "checked" : "" %> id="check_1" class="magic-checkbox">
+          <input type="checkbox" name="research_field[]" value="机器学习/深度学习" <%= @training.research_field_include?("机器学习/深度学习") ? "checked" : "" %> id="check_1" class="magic-checkbox">
           <label for="check_1" style="top:8px">&nbsp;</label>
         </span>
       </li>
       <li class="clearfix infoBar">
         <span class="left_tag fl">计算机结构与组成</span>
         <span class="fr">
-          <input type="checkbox" name="research_field[]" value="计算机结构与组成" <%= @training.research_field.split(",").include?("计算机结构与组成") ? "checked" : "" %> id="check_2" class="magic-checkbox">
+          <input type="checkbox" name="research_field[]" value="计算机结构与组成" <%= @training.research_field_include?("计算机结构与组成") ? "checked" : "" %> id="check_2" class="magic-checkbox">
           <label for="check_2" style="top:8px">&nbsp;</label>
         </span>
       </li>
       <li class="clearfix infoBar">
         <span class="left_tag fl">计算机系统</span>
         <span class="fr">
-          <input type="checkbox" name="research_field[]" value="计算机系统" <%= @training.research_field.split(",").include?("计算机系统") ? "checked" : "" %> id="check_3" class="magic-checkbox">
+          <input type="checkbox" name="research_field[]" value="计算机系统" <%= @training.research_field_include?("计算机系统") ? "checked" : "" %> id="check_3" class="magic-checkbox">
           <label for="check_3" style="top:8px">&nbsp;</label>
         </span>
       </li>
       <li class="clearfix infoBar">
         <span class="left_tag fl">计算机软件技术和应用</span>
         <span class="fr">
-          <input type="checkbox" name="research_field[]" value="计算机软件技术和应用" <%= @training.research_field.split(",").include?("计算机软件技术和应用") ? "checked" : "" %> id="check_4" class="magic-checkbox">
+          <input type="checkbox" name="research_field[]" value="计算机软件技术和应用" <%= @training.research_field_include?("计算机软件技术和应用") ? "checked" : "" %> id="check_4" class="magic-checkbox">
           <label for="check_4" style="top:8px">&nbsp;</label>
         </span>
       </li>
       <li class="clearfix infoBar">
         <span class="left_tag fl">计算机理论</span>
         <span class="fr">
-          <input type="checkbox" name="research_field[]" value="计算机理论" <%= @training.research_field.split(",").include?("计算机理论") ? "checked" : "" %> id="check_5" class="magic-checkbox">
+          <input type="checkbox" name="research_field[]" value="计算机理论" <%= @training.research_field_include?("计算机理论") ? "checked" : "" %> id="check_5" class="magic-checkbox">
           <label for="check_5" style="top:8px">&nbsp;</label>
         </span>
       </li>
       <li class="clearfix infoBar">
         <span class="left_tag fl">计算机应用与学科交叉</span>
         <span class="fr">
-          <input type="checkbox" name="research_field[]" value="计算机应用与学科交叉" <%= @training.research_field.split(",").include?("计算机应用与学科交叉") ? "checked" : "" %> id="check_6" class="magic-checkbox">
+          <input type="checkbox" name="research_field[]" value="计算机应用与学科交叉" <%= @training.research_field_include?("计算机应用与学科交叉") ? "checked" : "" %> id="check_6" class="magic-checkbox">
           <label for="check_6" style="top:8px">&nbsp;</label>
         </span>
       </li>
       <li class="clearfix infoBar">
         <span class="left_tag fl">其他</span>
         <span class="fr">
-          <input type="checkbox" name="research_field[]" value="其他" <%= @training.research_field.split(",").include?("其他") ? "checked" : "" %> id="check_7" class="magic-checkbox">
+          <input type="checkbox" name="research_field[]" value="其他" <%= @training.research_field_include?("其他") ? "checked" : "" %> id="check_7" class="magic-checkbox">
           <label for="check_7" style="top:8px">&nbsp;</label>
         </span>
       </li>
diff --git a/db/migrate/20190613013623_add_reseach_field_to_trainings.rb b/db/migrate/20190613013623_add_reseach_field_to_trainings.rb
new file mode 100644
index 00000000..5354d13a
--- /dev/null
+++ b/db/migrate/20190613013623_add_reseach_field_to_trainings.rb
@@ -0,0 +1,5 @@
+class AddReseachFieldToTrainings < ActiveRecord::Migration
+  def change
+    add_column :trainings, :research_field, :string
+  end
+end
diff --git a/db/migrate/20190613063745_add_training_category_to_trainings.rb b/db/migrate/20190613063745_add_training_category_to_trainings.rb
new file mode 100644
index 00000000..f304a27d
--- /dev/null
+++ b/db/migrate/20190613063745_add_training_category_to_trainings.rb
@@ -0,0 +1,5 @@
+class AddTrainingCategoryToTrainings < ActiveRecord::Migration
+  def change
+    add_column :trainings, :training_category, :string
+  end
+end