diff --git a/app/controllers/shixun_lists_controller.rb b/app/controllers/shixun_lists_controller.rb
index c77da46e0..52682089c 100644
--- a/app/controllers/shixun_lists_controller.rb
+++ b/app/controllers/shixun_lists_controller.rb
@@ -1,5 +1,9 @@
 class ShixunListsController < ApplicationController
   def index
+    # 去除开头标点符号
+    @reg = /^[，。？：；‘’！“”—……、]/
+    # 附件的替换
+    @atta_reg = /!\[.*]\(\/api\/attachments\/\d+\)/
     @results = ShixunSearchService.call(search_params, current_laboratory)
   end
 
diff --git a/app/views/shixun_lists/index.json.jbuilder b/app/views/shixun_lists/index.json.jbuilder
index 2507be68d..98e3025e5 100644
--- a/app/views/shixun_lists/index.json.jbuilder
+++ b/app/views/shixun_lists/index.json.jbuilder
@@ -4,19 +4,13 @@ json.shixun_list do
   json.array! @results.with_highlights(multiple: true) do |obj, highlights|
     json.merge! obj.to_searchable_json
     json.challenge_names obj.challenges.pluck(:subject)
-
-    # 去除开头标点符号
-    reg = /^[，。？：；‘’！“”—……、]/
-    # 附件的替换
-    atta_reg = /!\[.*]\(\/api\/attachments\/\d+\)/
-
-    highlights[:description]&.first&.sub!(reg, '')
-    highlights[:description]&.map{|des| des.gsub(atta_reg, '')}
-    highlights[:content]&.first&.sub!(reg, '')
-    highlights[:content]&.map{|des| des.gsub(atta_reg, '')}
+    highlights[:description]&.first&.sub!(@reg, '')
+    highlights[:description]&.map{|des| des.gsub(@atta_reg, '')}
+    highlights[:content]&.first&.sub!(@reg, '')
+    highlights[:content]&.map{|des| des.gsub(@atta_reg, '')}
 
     json.title highlights.delete(:name)&.join('...') || obj.searchable_title
-    json.description highlights[:description]&.join('...') || Util.extract_content(obj.description)[0..300]&.gsub(atta_reg, '')
+    json.description highlights[:description]&.join('...') || Util.extract_content(obj.description)[0..300]&.gsub(@atta_reg, '')
 
     json.pic url_to_avatar(obj)
     json.content highlights