diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index ac50e78d3..42bc16343 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -109,7 +109,7 @@ module ApplicationHelper
 
   # 计算到结束还有多长时间 **天**小时**分
   def how_much_time(time)
-    if time.nil?
+    if time.nil? || time < Time.now   #6.21 -hs 增加小于time.now
       ''
     else
       result = ((time - Time.now.to_i).to_i / (24*60*60)).to_s + " 天 "
diff --git a/app/helpers/exercises_helper.rb b/app/helpers/exercises_helper.rb
index 53b2fa4c1..95ec0ac24 100644
--- a/app/helpers/exercises_helper.rb
+++ b/app/helpers/exercises_helper.rb
@@ -323,7 +323,6 @@ module ExercisesHelper
     else
       show_unreview_count = nil
     end
-    logger.info("##########__________exercise_end_time__________###############{exercise_end_time}")
 
     if exercise_status == 2 && exercise_end_time.present?
       ex_left_time = how_much_time(exercise_end_time)
diff --git a/app/tasks/exercise_publish_task.rb b/app/tasks/exercise_publish_task.rb
index 7f3ee63ee..9d62e4d2e 100644
--- a/app/tasks/exercise_publish_task.rb
+++ b/app/tasks/exercise_publish_task.rb
@@ -5,7 +5,7 @@ class ExercisePublishTask
   def publish
     Rails.logger.info("log--------------------------------exercise_publish start")
     puts "--------------------------------exercise_publish start"
-    exercises = Exercise.where("publish_time is not null and exercise_status = 1 and publish_time <=?",Time.now)
+    exercises = Exercise.includes(:exercise_users).where("publish_time is not null and exercise_status = 1 and publish_time <=?",Time.now)
     exercises.each do |exercise|
       exercise.update_column('exercise_status', 2)
       course = exercise.course
@@ -67,21 +67,21 @@ class ExercisePublishTask
   end
 
   def end
-    exercises = Exercise.where("end_time <= ? and exercise_status = ?",Time.now,2)
+    Rails.logger.info("log--------------------------------exercise_end start")
+    puts "--------------------------------exercise_end start"
+    # 1。统一设置的试卷
+    exercises = Exercise.includes(:exercise_users,:exercise_questions).where("exercise_status = 2 AND unified_setting = true AND end_time <= ?",Time.now)
     exercises.each do |exercise|
-      course = exercise.course
       ex_type = exercise.exercise_questions.pluck(:question_type).uniq
-      exercise.update_attribute('exercise_status', 3)
+      exercise.update_column('exercise_status', 3)
       exercise.exercise_users.each do |exercise_user|
         if exercise_user.commit_status == 0 && !exercise_user.start_at.nil?
-          # exercise_user.update_attributes(:commit_status => 1, :end_at => Time.now, :status => true)
           s_score = calculate_student_score(exercise, exercise_user.user)[:total_score]
           if ex_type.include?(4)   #是否包含主观题
             subjective_score = exercise_user.subjective_score
           else
             subjective_score = -1.0
           end
-          # subjective_score = exercise_user.subjective_score
           total_score_subjective_score = subjective_score < 0.0 ? 0.0 : subjective_score
           total_score = s_score + total_score_subjective_score
           commit_option = {
@@ -93,21 +93,20 @@ class ExercisePublishTask
               :subjective_score => subjective_score
           }
           exercise_user.update_attributes(commit_option)
-          # if exercise_user.user.exercise_answers.where(:exercise_question_id => exercise.exercise_questions.where(:question_type => 4).map(&:id)).empty?
-          #   exercise_user.update_attributes(:subjective_score => 0)
-          # end
         end
       end
     end
 
-    all_exercises = Exercise.where("end_time > ? and exercise_status = ?",Time.now,2)
+    # 2.非统一的试卷
+    all_exercises = Exercise.includes(:exercise_group_settings,:exercise_users,:exercise_questions).where("unified_setting = false AND exercise_status = 2 AND end_time > ?",Time.now)
     exercise_ids = all_exercises.blank? ? "(-1)" : "(" + all_exercises.map(&:id).join(",") + ")"
     ex_group_settings = ExerciseGroupSetting.where("end_time <= '#{Time.now}' and exercise_id in #{exercise_ids}")
     ex_group_settings.each do |exercise_setting|
       exercise = exercise_setting.exercise
+      exercise.update_column('exercise_status', 3)
       ex_types = exercise.exercise_questions.pluck(:question_type).uniq
       users = exercise.course.students.where(:course_group_id => exercise_setting.course_group_id)
-      exercise_users = exercise.exercise_users.where(:user_id => users.map(&:user_id))
+      exercise_users = exercise.exercise_users.where(:user_id => users.pluck(:user_id))
 
       exercise_users.each do |exercise_user|
         if exercise_user.commit_status == 0 && !exercise_user.start_at.nil?
@@ -117,7 +116,6 @@ class ExercisePublishTask
             subjective_score = -1.0
           end
           s_score = calculate_student_score(exercise, exercise_user.user)[:total_score]
-          # subjective_score = exercise_user.subjective_score
           total_score_subjective_score = subjective_score < 0.0 ? 0.0 : subjective_score
           total_score = s_score + total_score_subjective_score
           commit_option = {
@@ -129,17 +127,11 @@ class ExercisePublishTask
               :subjective_score => subjective_score
           }
           exercise_user.update_attributes(commit_option)
-          # exercise_user.update_attributes(:commit_status => 1, :end_at => Time.now, :status => true)
-
-          # s_score = calculate_student_score(exercise, exercise_user.user)[:total_score]
-          # exercise_user.update_attributes(:objective_score => s_score, :score => (s_score + (exercise_user.subjective_score && exercise_user.subjective_score > 0 ? exercise_user.subjective_score : 0)))
-          # if exercise_user.user.exercise_answers.where(:exercise_question_id => exercise.exercise_questions.where(:question_type => 4).map(&:id)).empty?
-          #   exercise_user.update_attributes(:subjective_score => 0.0)
-          # end
         end
       end
     end
-    Rails.logger.info("log--------------------------------exercise_end completed")
+    Rails.logger.info("log--------------------------------exercise_end end")
+    puts "--------------------------------exercise_end end"
   end
 
 end
\ No newline at end of file
diff --git a/lib/tasks/poll_publish.rake b/lib/tasks/poll_publish.rake
index c33ad3afb..d10db7a5d 100644
--- a/lib/tasks/poll_publish.rake
+++ b/lib/tasks/poll_publish.rake
@@ -6,7 +6,7 @@ namespace :poll_publish do
   task :publish => :environment do
     puts "--------------------------------poll_publish start"
     # 统一设置发布时间的问卷
-    polls = Poll.where("publish_time is not null and polls_status = 1 and publish_time <=?",Time.now)
+    polls = Poll.includes(:poll_users).where("publish_time is not null and polls_status = 1 and publish_time <=?",Time.now)
     polls.each do |poll|
       poll.update_attributes(:polls_status => 2)
       course = poll.course
@@ -71,7 +71,7 @@ namespace :poll_publish do
   task :nearly_end => :environment do
     puts "--------------------------------poll_nearly_end start"
     # 统一设置发布时间的问卷
-    polls = Poll.where("polls_status = 2 and unified_setting = 1 and end_time <=? and end_time > ?", Time.now + 86400, Time.now + 84600)
+    polls = Poll.includes(:poll_users).where("polls_status = 2 and unified_setting = 1 and end_time <=? and end_time > ?", Time.now + 86400, Time.now + 84600)
     polls.each do |poll|
       if poll.tidings.where(:parent_container_type => "NearlyEnd").count == 0
         course = poll.course
@@ -111,7 +111,7 @@ namespace :poll_publish do
   end
 
   task :end => :environment do
-    polls = Poll.where("polls_status = 2 and unified_setting = 1 and end_time <=?",Time.now)
+    polls = Poll.includes(:poll_users).where("polls_status = 2 and unified_setting = 1 and end_time <=?",Time.now)
     polls.each do |poll|
       poll.update_attributes(:polls_status => 3)
       poll.poll_users.each do |poll_user|
@@ -123,6 +123,7 @@ namespace :poll_publish do
 
     PollGroupSetting.where("end_time < ? and end_time > ?", Time.now + 1800, Time.now - 1800).each do |poll_setting|
       poll = poll_setting.poll
+      poll.update_column('polls_status',3)
 
       users = poll.course.course_members.where(:course_group_id => poll_setting.course_group_id)
       poll_users = poll.poll_users.where(:user_id => users.map(&:user_id))