diff --git a/app/controllers/zips_controller.rb b/app/controllers/zips_controller.rb
index 89f473499..f0ab50001 100644
--- a/app/controllers/zips_controller.rb
+++ b/app/controllers/zips_controller.rb
@@ -46,7 +46,7 @@ class ZipsController < ApplicationController
         else
           @course = @exercise.course
 
-          default_ex_users = @exercise.all_exercise_users(current_user.id).exercise_user_committed
+          default_ex_users = @exercise.all_exercise_users(current_user.id).exercise_user_committed.limit 2
           default_ex_users_size = default_ex_users.size
           @ex_users =  default_ex_users   #仅导出已提交的，截止后则是全部为提交的。
           #可以分班选择