diff --git a/app/helpers/exercises_helper.rb b/app/helpers/exercises_helper.rb
index eaeb458a3..513f980d8 100644
--- a/app/helpers/exercises_helper.rb
+++ b/app/helpers/exercises_helper.rb
@@ -188,7 +188,7 @@ module ExercisesHelper
         if ex_ordered
           all_user_answers = effictive_users.pluck(:answer_text)
           null_stand_choice.each_with_index do |s,index|
-            s_choice_text = null_stand_text[index]
+            s_choice_text = null_stand_text[index].to_s.strip
             user_count = 0
             # user_count = user_count + effictive_users.where("exercise_choice_id = ? and answer_text = ?",s,s_choice_text).pluck(:user_id).uniq.size
             user_count = user_count + effictive_users.select{|answer| answer.exercise_choice_id == s && answer.answer_text == s_choice_text}.size
diff --git a/app/services/shixun_search_service.rb b/app/services/shixun_search_service.rb
index 710910100..32488a7c3 100644
--- a/app/services/shixun_search_service.rb
+++ b/app/services/shixun_search_service.rb
@@ -23,10 +23,9 @@ class ShixunSearchService < ApplicationService
       if User.current.admin? || User.current.business? || !User.current.school_id
         @shixuns = @shixuns.where(hidden: 0)
       else
-        shixun_ids = ShixunSchool.where(school_id: User.current.school_id).pluck(:shixun_id)
-        shixun_ids = shixun_ids.reject(&:blank?).length == 0 ? -1 : shixun_ids.join(",")
+        none_shixun_ids = ShixunSchool.where("school_id != #{User.current.school_id}").pluck(:shixun_id)
 
-        @shixuns = @shixuns.where("use_scope = 1 or id in (#{shixun_ids})").unhidden.published.or(@shixuns.where(id: User.current.shixuns))
+        @shixuns = @shixuns.where.not(id: none_shixun_ids).where(hidden: 0, status: 2, public: 2).or(@shixuns.where(id: User.current.shixuns))
       end
     end
 
diff --git a/db/migrate/20200114062353_migrate_coures_member_group.rb b/db/migrate/20200114062353_migrate_coures_member_group.rb
new file mode 100644
index 000000000..b9992cb50
--- /dev/null
+++ b/db/migrate/20200114062353_migrate_coures_member_group.rb
@@ -0,0 +1,25 @@
+class MigrateCouresMemberGroup < ActiveRecord::Migration[5.2]
+  def change
+    course_ids = [377, 657, 715, 777, 973, 1093, 1131, 1180, 1309, 1920, 2037, 2346, 2354, 2493, 2752, 2920, 3000,
+                  3141, 3240, 3350, 3351, 3353, 3387, 3533, 3796]
+
+    courses = Course.where(id: course_ids)
+
+    courses.each do |course|
+      group_ids = course.course_groups.pluck(:id) + [0]
+      course.course_members.where.not(course_group_id: group_ids).each do |member|
+        if CourseGroup.where(course_id: course.id, name: member.course_group_name).exists?
+          new_group = CourseGroup.where(course_id: course.id, name: member.course_group_name).first
+        else
+          # position = CourseGroup.where(course_id: course.id).order("position desc").first&.position.to_i + 1
+          new_group = course.course_groups.create!(name: member.course_group_name)
+          course.exercise_group_settings.where(course_group_id: member.course_group_id).update_all(course_group_id: new_group.id)
+          course.attachment_group_settings.where(course_group_id: member.course_group_id).update_all(course_group_id: new_group.id)
+          HomeworkGroupReview.where(homework_common_id: course.homework_commons.pluck(:id)).where(course_group_id: member.course_group_id).update_all(course_group_id: new_group.id)
+          course.homework_group_settings.where(course_group_id: member.course_group_id).update_all(course_group_id: new_group.id)
+        end
+        member.update!(course_group_id: new_group.id)
+      end
+    end
+  end
+end
diff --git a/db/migrate/20200114071420_migrate_course_group_member_count.rb b/db/migrate/20200114071420_migrate_course_group_member_count.rb
new file mode 100644
index 000000000..aad9dcc9c
--- /dev/null
+++ b/db/migrate/20200114071420_migrate_course_group_member_count.rb
@@ -0,0 +1,4 @@
+class MigrateCourseGroupMemberCount < ActiveRecord::Migration[5.2]
+  def change
+  end
+end
diff --git a/db/migrate/20200114071917_migrate_coure_group_position.rb b/db/migrate/20200114071917_migrate_coure_group_position.rb
new file mode 100644
index 000000000..fc04e1bcb
--- /dev/null
+++ b/db/migrate/20200114071917_migrate_coure_group_position.rb
@@ -0,0 +1,14 @@
+class MigrateCoureGroupPosition < ActiveRecord::Migration[5.2]
+  def change
+    course_ids = [377, 657, 715, 777, 973, 1093, 1131, 1180, 1309, 1920, 2037, 2346, 2354, 2493, 2752, 2920, 3000,
+                  3141, 3240, 3350, 3351, 3353, 3387, 3533, 3796]
+
+    courses = Course.where(id: course_ids)
+
+    courses.each do |course|
+      CourseGroup.where(course_id: course.id).reorder("position ASC, CONVERT(course_groups.name USING gbk) COLLATE gbk_chinese_ci ASC").each_with_index do |group, index|
+        group.update!(position: index+1)
+      end
+    end
+  end
+end