diff --git a/db/migrate/20190805010550_modify_ke_contents_for_markdown.rb b/db/migrate/20190805010551_modify_ke_contents_for_markdown.rb
similarity index 64%
rename from db/migrate/20190805010550_modify_ke_contents_for_markdown.rb
rename to db/migrate/20190805010551_modify_ke_contents_for_markdown.rb
index 53c018b8b..4883a2f38 100644
--- a/db/migrate/20190805010550_modify_ke_contents_for_markdown.rb
+++ b/db/migrate/20190805010551_modify_ke_contents_for_markdown.rb
@@ -1,12 +1,12 @@
 class ModifyKeContentsForMarkdown < ActiveRecord::Migration[5.2]
   include ActionView::Helpers::SanitizeHelper
   def change
-    # def ke_transform_to_md content
-    #   return content if content.blank?
-    #   s_contents = sanitize(content, tags: %w(img a span table td tr tbody pre), attributes: %w(src href target style))
-    #   s_contents.gsub(">\n<", "><").gsub(/^\n/, "").gsub(" ", "&nbsp;").gsub(/(\n)+/, "<br />")
-    #       .gsub("\t", "&nbsp;&nbsp;&nbsp;&nbsp;").gsub("\n", "").gsub(" ", "&nbsp;").gsub(/(<br\s?\/?>)+/, "<br />")
-    # end
+    def ke_transform_to_md content
+      return content if content.blank?
+      s_contents = sanitize(content, tags: %w(img a span table td tr tbody pre), attributes: %w(src href target style))
+      s_contents.gsub(">\n<", "><").gsub(/^\n/, "").gsub(" ", "&nbsp;").gsub(/(\n)+/, "<br />")
+          .gsub("\t", "&nbsp;&nbsp;&nbsp;&nbsp;").gsub("\n", "").gsub(" ", "&nbsp;").gsub(/(<br\s?\/?>)+/, "<br />")
+    end
     #
     # # 课程讨论区
     # MessageDetail.find_each do |m|
@@ -14,11 +14,11 @@ class ModifyKeContentsForMarkdown < ActiveRecord::Migration[5.2]
     #   m.update_column(:content, content)
     # end
 
-    # 试卷的标题
-    # ExerciseQuestion.find_each do |eq|
-    #   question_title = ke_transform_to_md eq.question_title
-    #   eq.update_column(:question_title, question_title)
-    # end
+    试卷的标题
+    ExerciseQuestion.find_each do |eq|
+      question_title = ke_transform_to_md eq.question_title
+      eq.update_column(:question_title, question_title)
+    end
 
     # # 试卷的答案
     # ExerciseStandardAnswer.find_each do |esa|