diff --git a/app/services/zip_service.rb b/app/services/zip_service.rb
index 4d381e76..8be197f4 100755
--- a/app/services/zip_service.rb
+++ b/app/services/zip_service.rb
@@ -50,10 +50,11 @@ module ZipService
     bid_homework_path = []
     digests = []
     members = exercise.course.members
-    exercise_users.each do |exercise_user|
+    exercise_users.each_with_index do |exercise_user, index|
       member = members.where(:user_id => exercise_user.user_id).first
       group_name = member.try(:course_group_id).to_i == 0 ? '未分班' : member.course_group.name
-      export_file_name = "#{group_name}-#{exercise.course_id}-#{exercise.exercise_name}-#{exercise_user.user.user_extensions.student_id}-#{exercise_user.user.show_real_name}" + ".pdf"
+      # export_file_name = "#{group_name}-#{exercise.course_id}-#{exercise.exercise_name}-#{exercise_user.user.user_extensions.student_id}-#{exercise_user.user.show_real_name}" + ".pdf"
+      export_file_name = "#{exercise.id}-#{exercise_user.user.user_extensions.student_id}-#{index}" + ".pdf"
       out_file = export_user_exercise(exercise, exercise_user, export_file_name)
       file_name = File::expand_path(out_file)
 
@@ -183,6 +184,7 @@ module ZipService
 
   def export_user_exercise exercise, exercise_user, file_name
     url = Setting.protocol + "://" + Setting.host_name + "/exercise/" + exercise.id.to_s + "/show_student_result?user_id=#{exercise_user.user_id}&pdf=1"
+    Rails.logger.info("#########################url: #{url}")
     kit = PDFKit.new(url, :page_size => "A4")
     # kit.to_pdf # inline PDF
     # file_name = "#{exercise.course_id}-#{exercise.exercise_name}-#{exercise_user.user.user_extensions.student_id}-#{exercise_user.user.show_real_name}" + ".pdf"
@@ -191,8 +193,8 @@ module ZipService
     Rails.logger.info("###################file_name: #{file_name}")
     kit.to_file("#{OUTPUT_FOLDER}/#{file_name}")
     out_file = "#{OUTPUT_FOLDER}/#{file_name}"
-    out_file
     Rails.logger.info("#################out_file_file_name: #{out_file}")
+    out_file
   end
 
   def export_user_shixun_work homework, student_work, file_name