diff --git a/app/helpers/courses_helper.rb b/app/helpers/courses_helper.rb
index d98de27f6..37c7deb4c 100644
--- a/app/helpers/courses_helper.rb
+++ b/app/helpers/courses_helper.rb
@@ -865,7 +865,7 @@ module CoursesHelper
   # 学生按作业总分排序，取前8个
   def hero_homework_score(course, score_sort_by)
     sql_select = "SELECT members.*,(
-          SELECT SUM(IF(student_works.final_score is null,null,student_works.final_score - student_works.absence_penalty - student_works.late_penalty))
+          SELECT SUM(IF(student_works.final_score is null,null,IF(student_works.final_score = 0, 0, student_works.final_score - student_works.absence_penalty - student_works.late_penalty)))
           FROM student_works,homework_commons
           WHERE student_works.homework_common_id = homework_commons.id
           AND homework_commons.course_id = #{course.id}