diff --git a/app/services/homeworks_service.rb b/app/services/homeworks_service.rb
index c70535e17..5483eed83 100644
--- a/app/services/homeworks_service.rb
+++ b/app/services/homeworks_service.rb
@@ -133,8 +133,10 @@ class HomeworksService
   # 计算实训作品学生的效率分
   def update_student_eff_score homework
     if homework.work_efficiency && homework.max_efficiency != 0
+      max_efficiency = homework.student_works.where("compelete_status != 0").pluck(:efficiency).max
+      homework.update_column("max_efficiency", max_efficiency)
       homework.student_works.where("compelete_status != 0").each do |student_work|
-        eff_score = student_work.efficiency / homework.max_efficiency * homework.eff_score
+        eff_score = student_work.efficiency / max_efficiency * homework.eff_score
         student_work.eff_score = format("%.2f", eff_score)
         student_work.late_penalty = student_work.work_status == 1 ? 0 : homework.late_penalty
         unless student_work.ultimate_score
@@ -333,7 +335,10 @@ class HomeworksService
           work.compelete_status = myshixun_endtime < setting_time.end_time ? 2 : 3
 
           # 如果作业的最大效率值有变更则更新所有作品的效率分
-          homework.update_column("max_efficiency", work.efficiency) if homework.work_efficiency && homework.max_efficiency < work.efficiency
+          if homework.work_efficiency && homework.max_efficiency < work.efficiency
+            homework.max_efficiency = work.efficiency
+            homework.save(validate: false)
+          end
         else
           work.compelete_status = 1 # 未通关
         end