diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index b3cf1f0be..d19de52c4 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -1173,7 +1173,6 @@ class ExercisesController < ApplicationController
     ActiveRecord::Base.transaction do
       begin
         @current_user_id = current_user.id
-        @exercise = @exercise
         exercise_ids = [@exercise.id]
         @exercise_status = @exercise.get_exercise_status(current_user.id)
         @course_all_members = @course.students
@@ -1271,16 +1270,17 @@ class ExercisesController < ApplicationController
 
           #搜索
           if params[:search].present?
-
             @exercise_users_list = @exercise_users_list.joins(user: :user_extension).where("CONCAT(lastname, firstname) like ? OR student_id like ?", "%#{params[:search]}%", "%#{params[:search]}%")
           end
 
+          exercise_user_joins = @exercise_users_list.joins(user: :user_extension)
+
           if order == "student_id"
-            @exercise_users_list = @exercise_users_list.joins(user: :user_extension).order("user_extensions.student_id DESC")
+            @exercise_users_list = exercise_user_joins.order("user_extensions.student_id DESC")
           elsif order == "score"
-            @exercise_users_list = @exercise_users_list.joins(user: :user_extension).order("#{order} DESC")
+            @exercise_users_list = exercise_user_joins.order("#{order} DESC")
           else
-            @exercise_users_list = @exercise_users_list.order("end_at DESC, start_at DESC")
+            @exercise_users_list = exercise_user_joins.order("end_at DESC, start_at DESC")
           end
 
           @export_ex_users = @exercise_users_list
@@ -1297,9 +1297,11 @@ class ExercisesController < ApplicationController
               if @user_course_identity > Course::ASSISTANT_PROFESSOR
                 tip_exception(403,"无权限操作")
               else
-                if @exercise_users_size == 0
+                if @export_ex_users.exercise_user_committed.size == 0
                   normal_status(-1,"暂无用户提交")
                 else
+                  @exercise = @exercise.includes(:exercise_questions)
+                  @export_ex_users = @export_ex_users.includes(user: :user_extension)
                   get_export_users(@exercise,@course,@export_ex_users)
                   exercise_export_name =
                       "#{current_user.real_name}_#{@course.name}_#{@exercise.exercise_name}_#{Time.now.strftime('%Y%m%d_%H%M%S')}"
diff --git a/app/controllers/polls_controller.rb b/app/controllers/polls_controller.rb
index eb03345e7..44cdc6512 100644
--- a/app/controllers/polls_controller.rb
+++ b/app/controllers/polls_controller.rb
@@ -920,11 +920,6 @@ class PollsController < ApplicationController
   def commit_result
     ActiveRecord::Base.transaction do
       begin
-        # @poll_questions = @poll.poll_questions.order("question_number ASC")
-        # 全部页面，需返回
-        # @poll_questions_count = @poll_questions.size
-        # 分页
-        # @poll = @poll.includes(:poll_users,user: :user_extension)
         @poll_users = @poll.poll_users
         @poll_commit_ids = @poll_users.commit_by_status(1).pluck(:user_id) #问卷提交用户的id
         @page  = params[:page] || 1
@@ -937,7 +932,7 @@ class PollsController < ApplicationController
           format.xlsx{
             if @user_course_identity > Course::ASSISTANT_PROFESSOR
               tip_exception(403,"无权限操作")
-            elsif @poll_export_questions.size == 0 || (@poll_users.where("commit_status = ?",1).size == 0)
+            elsif (@poll.polls_status == 1) || (@poll_export_questions.size == 0) || (@poll_commit_ids.size == 0)
               normal_status(-1,"暂时没有提交的用户")
             else
               polls_export_name = "#{current_user.real_name}_#{@course.name}_#{@poll.polls_name}_#{Time.now.strftime('%Y%m%d_%H%M%S')}"
@@ -1035,10 +1030,12 @@ class PollsController < ApplicationController
             @poll_users_list = @poll_users_list.joins(user: :user_extension).where("CONCAT(lastname, firstname) like ? OR student_id like ?", "%#{search_content}%", "%#{search_content}%")
           end
 
+          poll_users_joins =  @poll_users_list.joins(user: :user_extension)
+
           if order == "student_id"
-            @poll_users_list = @poll_users_list.joins(user: :user_extension).order("user_extensions.student_id DESC")
+            @poll_users_list = poll_users_joins.order("user_extensions.student_id DESC")
           else
-            @poll_users_list = @poll_users_list.joins(user: :user_extension).order("end_at DESC")
+            @poll_users_list = poll_users_joins.order("end_at DESC")
           end
 
           @poll_users_size = @poll_users_list.count