diff --git a/app/controllers/homework_commons_controller.rb b/app/controllers/homework_commons_controller.rb
index 519c05c62..d09609bdc 100644
--- a/app/controllers/homework_commons_controller.rb
+++ b/app/controllers/homework_commons_controller.rb
@@ -208,7 +208,7 @@ class HomeworkCommonsController < ApplicationController
               student_work_to_xlsx(@work_excel,@homework)
               exercise_export_name = current_user.real_name + "_" + @course.name + "_" + @homework.name + "_" + Time.now.strftime('%Y%m%d_%H%M%S')
 
-              render xlsx: "#{exercise_export_name.strip.first(30)}",template: "homework_commons/works_list.xlsx.axlsx",locals:
+              render xlsx: "#{exercise_export_name.encode('UTF-8', 'gb2312', {:invalid => :replace, :undef => :replace, :replace => ' '}).strip.first(30)}",template: "homework_commons/works_list.xlsx.axlsx",locals:
                   {table_columns: @work_head_cells,task_users: @work_cells_column}
             }
           end
diff --git a/app/controllers/zips_controller.rb b/app/controllers/zips_controller.rb
index 67c8c74f7..2b70b9b27 100644
--- a/app/controllers/zips_controller.rb
+++ b/app/controllers/zips_controller.rb
@@ -10,9 +10,8 @@ class ZipsController < ApplicationController
     service = BatchExportShixunReportService.new(@homework, @all_student_works)
 
     filename = filename_for_content_disposition(service.filename)
-    Rails.logger.info("################___________file_name________________###########{filename}")
-    Rails.logger.info("################___________service.filename________________###########{service.filename}")
-    send_file service.zip, filename: filename.encode(Encoding.default_external, 'gb2312'), type: 'application/zip'
+
+    send_file service.zip, filename: filename, type: 'application/zip'
   rescue BatchExportShixunReportService::Error => ex
     normal_status(-1, ex.message)
   end
diff --git a/app/helpers/export_helper.rb b/app/helpers/export_helper.rb
index 839686f5b..7f64a99cd 100644
--- a/app/helpers/export_helper.rb
+++ b/app/helpers/export_helper.rb
@@ -40,10 +40,17 @@ module ExportHelper
       works.includes(user: :user_extension, student_works_scores: :user).each_with_index do |w, index|
         w_user = w.user
         w_1 = (index + 1)
-        w_2 = w_user.login
-        w_3 = w_user.real_name
-        w_3_1 = w_user.mail
-        w_4 = w_user.student_id.present? ? w_user.student_id : "--"
+        if w_user.present?
+          w_2 = w_user&.login
+          w_3 = w_user&.real_name
+          w_3_1 = w_user&.mail
+          w_4 = w_user.student_id.present? ? w_user.student_id : "--"
+        else
+          w_2 = "--"
+          w_3 = "--"
+          w_3_1 = "--"
+          w_4 = "--"
+        end
         course_name = course.students.find_by(user_id: w.user_id).try(:course_group_name)
         w_5 = course_name.present? ? course_name : "--"
         #0： 未提交， 1 按时提交， 2 延迟提交