diff --git a/app/controllers/competitions/competitions_controller.rb b/app/controllers/competitions/competitions_controller.rb
index 1a80dc7e6..31ed4367d 100644
--- a/app/controllers/competitions/competitions_controller.rb
+++ b/app/controllers/competitions/competitions_controller.rb
@@ -22,7 +22,7 @@ class Competitions::CompetitionsController < Competitions::BaseController
     @count = competitions.count
 
     competitions = competitions.order(published_at: :desc, online_time: :desc)
-    @competitions = paginate(competitions.includes(sponsor_schools: :school, current_stage_section: :competition_stage))
+    @competitions = paginate(competitions.includes(:competition_mode_setting, sponsor_schools: :school, current_stage_section: :competition_stage))
 
     ids = @competitions.map(&:id)
     @member_count_map = TeamMember.where(competition_id: ids).group(:competition_id).count
diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index 3b6273465..9df7a0d6c 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -257,8 +257,8 @@ class CoursesController < ApplicationController
       user_ids = all_members.map(&:user_id)
       rank = user_ids.index(current_user.id).to_i + 1
       if rank > 10
-        current_member = all_members.select{|member| member.user_id == current_user.id}
-        @course_members << current_member
+        current_member = all_members.select{|member| member.user_id == current_user.id}.first
+        @course_members << current_member if current_member.present?
       end
     end
   end
diff --git a/app/controllers/homework_commons_controller.rb b/app/controllers/homework_commons_controller.rb
index 5d27de7b8..2bb8ec6cf 100644
--- a/app/controllers/homework_commons_controller.rb
+++ b/app/controllers/homework_commons_controller.rb
@@ -125,7 +125,7 @@ class HomeworkCommonsController < ApplicationController
         # 学生已提交作品且补交（提交）已截止、作品公开、非匿评阶段
         if @work&.work_status.to_i > 0 && (@homework.work_public || @homework.score_open) &&
             ((!@homework.anonymous_comment && @homework.end_or_late) || (@homework_detail_manual.comment_status > 4 && @homework.end_or_late))
-          @student_works = student_works.where("user_id != #{@work.user_id}")
+          @student_works = student_works.where("student_works.user_id != #{@work.user_id}")
 
           # 匿评、申诉阶段只能看到分配给自己的匿评作品
         elsif @work&.work_status.to_i > 0 && @homework.anonymous_comment && @homework_detail_manual.comment_status > 2 && @homework_detail_manual.comment_status <= 4
diff --git a/app/models/competition.rb b/app/models/competition.rb
index 8613e974a..fa1267025 100644
--- a/app/models/competition.rb
+++ b/app/models/competition.rb
@@ -49,6 +49,12 @@ class Competition < ApplicationRecord
     end
   end
 
+  # 报名数
+  def team_member_count
+    course = competition_mode_setting&.course if mode == 2
+    course ? course.students.count : team_members.count
+  end
+
   def sponsor_schools_name
     sponsor_schools.map{|sponsor| sponsor.school.name}
   end
diff --git a/app/views/competitions/competitions/common_header.json.jbuilder b/app/views/competitions/competitions/common_header.json.jbuilder
index a869d920b..0d0f3f4ca 100644
--- a/app/views/competitions/competitions/common_header.json.jbuilder
+++ b/app/views/competitions/competitions/common_header.json.jbuilder
@@ -1,6 +1,6 @@
 json.extract! @competition, :id, :name, :sub_title, :identifier, :bonus, :mode
 json.visits_count @competition.visits
-member_count = @competition.team_members.count
+member_count = @competition.team_member_count
 json.member_count member_count.zero? ? 268 : member_count
 
 json.start_time @competition.start_time&.strftime("%Y-%m-%d")
diff --git a/app/views/competitions/competitions/index.json.jbuilder b/app/views/competitions/competitions/index.json.jbuilder
index c01f0aa59..b7a3f20e0 100644
--- a/app/views/competitions/competitions/index.json.jbuilder
+++ b/app/views/competitions/competitions/index.json.jbuilder
@@ -5,7 +5,8 @@ json.competitions do
 
     json.competition_status competition.competition_status
     json.visits_count competition.visits
-    member_count = @member_count_map&.fetch(competition.id, 0) || competition.team_members.count
+    course = competition.competition_mode_setting&.course if competition.mode == 2
+    member_count = course ? course.students.count : (@member_count_map&.fetch(competition.id, 0) || competition.team_members.count)
     json.member_count member_count.zero? ? 268 : member_count
 
     json.image url_to_avatar(competition)
diff --git a/app/views/courses/act_score.json.jbuilder b/app/views/courses/act_score.json.jbuilder
index 394497635..ed6929b13 100644
--- a/app/views/courses/act_score.json.jbuilder
+++ b/app/views/courses/act_score.json.jbuilder
@@ -1,7 +1,7 @@
 json.course_members @course_members.each do |member|
   user = member.user
-  json.user_login user.login
-  json.user_name user.real_name
+  json.user_login user&.login
+  json.user_name user&.real_name
   # json.course_group member.course_group_name
   json.total_score member.score
 end
\ No newline at end of file