diff --git a/app/controllers/homework_commons_controller.rb b/app/controllers/homework_commons_controller.rb
index 97b9ecc44..9048b0046 100644
--- a/app/controllers/homework_commons_controller.rb
+++ b/app/controllers/homework_commons_controller.rb
@@ -255,7 +255,7 @@ class HomeworkCommonsController < ApplicationController
       challenge_settings = @homework.homework_challenge_settings
       myshixuns.find_each(batch_size: 100) do |myshixun|
         work = student_works.select{|work| work.user_id == myshixun.user_id}.first
-        if work && myshixun && (work.update_time.nil? || work.update_time < myshixun.games.pluck(:updated_at).max)
+        if work && myshixun
           games = myshixun.games.where(challenge_id: challenge_settings.pluck(:challenge_id))
           HomeworksService.new.update_myshixun_work_score work, myshixun, games, @homework, challenge_settings
         end
@@ -276,13 +276,13 @@ class HomeworkCommonsController < ApplicationController
     myshixun = Myshixun.find_by(shixun_id: params[:shixun_id], user_id: current_user.id)
     ActiveRecord::Base.transaction do
       begin
-        if work && myshixun && (work.update_time.nil? || work.update_time < myshixun.games.pluck(:updated_at).max)
+        if work && myshixun
           challenge_settings = @homework.homework_challenge_settings
           games = myshixun.games.where(challenge_id: challenge_settings.pluck(:challenge_id))
           HomeworksService.new.update_myshixun_work_score work, myshixun, games, @homework, challenge_settings
           normal_status("更新成功")
         else
-          normal_status("已是最新成绩")
+          normal_status("还开启挑战，暂不能更新成绩")
         end
       rescue Exception => e
         uid_logger(e.message)
diff --git a/app/controllers/myshixuns_controller.rb b/app/controllers/myshixuns_controller.rb
index ffa2ccc3b..95fbf8200 100644
--- a/app/controllers/myshixuns_controller.rb
+++ b/app/controllers/myshixuns_controller.rb
@@ -33,7 +33,7 @@ class MyshixunsController < ApplicationController
           uid_logger_error("版本库删除异常，详情：#{e.message}")
         end
 
-        StudentWork.where(:myshixun_id => @myshixun.id).update_all(:myshixun_id => nil, :work_status => 0)
+        StudentWork.where(:myshixun_id => @myshixun.id).update_all(:myshixun_id => 0, :work_status => 0)
 
       rescue Exception => e
         uid_logger_error("myshixun reset failed #{e}")