diff --git a/app/controllers/student_work_controller.rb b/app/controllers/student_work_controller.rb
index 0568ed077..8c5561d74 100644
--- a/app/controllers/student_work_controller.rb
+++ b/app/controllers/student_work_controller.rb
@@ -264,6 +264,7 @@ class StudentWorkController < ApplicationController
 
   #根据条件过滤作业结果
   def search_homework_member homeworks,name
+    name = name.downcase
     select_homework = homeworks.select{ |homework|
       homework.user[:login].to_s.downcase.include?(name) ||  homework.user.user_extensions[:student_id].to_s.downcase.include?(name) || (homework.user[:lastname].to_s.downcase + homework.user[:firstname].to_s.downcase).include?(name)
     }