diff --git a/app/views/trainings/enroll.html.erb b/app/views/trainings/enroll.html.erb
index 149de110..ff00277d 100644
--- a/app/views/trainings/enroll.html.erb
+++ b/app/views/trainings/enroll.html.erb
@@ -156,49 +156,49 @@
       <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" id="check_1" class="magic-checkbox">
+          <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">
           <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" id="check_2" class="magic-checkbox">
+          <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">
           <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" id="check_3" class="magic-checkbox">
+          <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">
           <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" 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.split(",").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" id="check_5" class="magic-checkbox">
+          <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">
           <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" 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.split(",").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" id="check_7" class="magic-checkbox">
+          <input type="checkbox" name="research_field[]" value="其他" <%= @training.research_field.split(",").include?("其他") ? "checked" : "" %> id="check_7" class="magic-checkbox">
           <label for="check_7" style="top:8px">&nbsp;</label>
         </span>
       </li>