diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index e0639de3f..fdb41c114 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -23,7 +23,7 @@ class ApplicationController < ActionController::Base
 
 	# 所有请求必须合法签名
 	def check_sign
-		if !Rails.env.development? && EduSetting.get("host_name") != "https://test-newweb.educoder.net"
+		if !Rails.env.development?
 			Rails.logger.info("66666  #{params}")
 			# suffix = request.url.split(".").last.split("?").first
 			# suffix_arr = ["xls", "xlsx", "pdf", "zip"] # excel文件先注释
diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index 5b555cf4c..44bfcf03f 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -402,7 +402,7 @@ class ExercisesController < ApplicationController
       if unified_setting || (course_group_ids.size == 0)
         tip_exception("发布时间不能为空") if params[:publish_time].blank?
         tip_exception("截止时间不能为空") if params[:end_time].blank?
-        tip_exception("截止时间不能早于发布时间") if params[:publish_time].to_time > params[:end_time].to_time
+        tip_exception("截止时间必须晚于发布时间") if params[:publish_time].to_time >= params[:end_time].to_time
         tip_exception("截止时间不能晚于课堂结束时间（#{@course.end_date.end_of_day.strftime("%Y-%m-%d %H:%M")}）") if @course.end_date.present? && params[:end_time].to_time > @course.end_date.end_of_day
 
         params_publish_time = params[:publish_time].to_time
diff --git a/app/controllers/graduation_tasks_controller.rb b/app/controllers/graduation_tasks_controller.rb
index cac763344..6196aa5f5 100644
--- a/app/controllers/graduation_tasks_controller.rb
+++ b/app/controllers/graduation_tasks_controller.rb
@@ -384,11 +384,11 @@ class GraduationTasksController < ApplicationController
           if @task.status == 0
             tip_exception("发布时间不能为空") if params[:publish_time].blank?
             tip_exception("截止时间不能为空") if params[:end_time].blank?
-            tip_exception("发布时间不能早于当前时间") if params[:publish_time] <= Time.now.strftime("%Y-%m-%d %H:%M:%S")
-            tip_exception("截止时间不能早于当前时间") if params[:end_time] <= Time.now.strftime("%Y-%m-%d %H:%M:%S")
-            tip_exception("截止时间不能早于发布时间") if params[:publish_time] > params[:end_time]
+            tip_exception("发布时间不能早于当前时间") if params[:publish_time].to_time <= Time.now
+            tip_exception("截止时间不能早于当前时间") if params[:end_time].to_time <= Time.now
+            tip_exception("截止时间必须晚于发布时间") if params[:publish_time].to_time >= params[:end_time].to_time
             tip_exception("截止时间不能晚于课堂结束时间（#{@course.end_date.end_of_day.strftime("%Y-%m-%d %H:%M")}）") if
-              @course.end_date.present? && params[:end_time] > strf_time(@course.end_date.end_of_day)
+              @course.end_date.present? && params[:end_time].to_time > @course.end_date.end_of_day
 
             @task.publish_time = params[:publish_time]
             @task.end_time = params[:end_time]
diff --git a/app/controllers/polls_controller.rb b/app/controllers/polls_controller.rb
index c9c9cc567..d320379be 100644
--- a/app/controllers/polls_controller.rb
+++ b/app/controllers/polls_controller.rb
@@ -724,7 +724,7 @@ class PollsController < ApplicationController
         if unified_setting || (course_group_ids.size == 0)
           tip_exception("发布时间不能为空") if params[:publish_time].blank?
           tip_exception("截止时间不能为空") if params[:end_time].blank?
-          tip_exception("截止时间不能早于发布时间") if params[:publish_time].to_time > params[:end_time].to_time
+          tip_exception("截止时间必须晚于发布时间") if params[:publish_time].to_time >= params[:end_time].to_time
           tip_exception("截止时间不能晚于课堂结束时间（#{@course.end_date.end_of_day.strftime("%Y-%m-%d %H:%M")}）") if
             @course.end_date.present? && params[:end_time].to_time > @course.end_date.end_of_day
 
diff --git a/app/services/update_homework_publish_setting_service.rb b/app/services/update_homework_publish_setting_service.rb
index 69a68b613..61902cd80 100644
--- a/app/services/update_homework_publish_setting_service.rb
+++ b/app/services/update_homework_publish_setting_service.rb
@@ -15,11 +15,11 @@ class UpdateHomeworkPublishSettingService < ApplicationService
       if params[:unified_setting] || course.course_groups_count == 0
         tip_exception("发布时间不能为空") if params[:publish_time].blank?
         tip_exception("截止时间不能为空") if params[:end_time].blank?
-        tip_exception("发布时间不能早于当前时间") if params[:publish_time] <= Time.now.strftime("%Y-%m-%d %H:%M:%S")
-        tip_exception("截止时间不能早于当前时间") if params[:end_time] <= Time.now.strftime("%Y-%m-%d %H:%M:%S")
-        tip_exception("截止时间不能早于发布时间") if params[:publish_time] > params[:end_time]
+        tip_exception("发布时间不能早于当前时间") if params[:publish_time].to_time <= Time.now
+        tip_exception("截止时间不能早于当前时间") if params[:end_time].to_time <= Time.now
+        tip_exception("截止时间必须晚于发布时间") if params[:publish_time].to_time >= params[:end_time].to_time
         tip_exception("截止时间不能晚于课堂结束时间（#{course.end_date.end_of_day.strftime("%Y-%m-%d %H:%M")}）") if
-          course.end_date.present? && params[:end_time] > course.end_date.end_of_day
+          course.end_date.present? && params[:end_time].to_time > course.end_date.end_of_day
 
         homework.unified_setting = 1
         homework.homework_group_settings.destroy_all
diff --git a/db/migrate/20200114071420_migrate_course_group_member_count.rb b/db/migrate/20200114071420_migrate_course_group_member_count.rb
deleted file mode 100644
index 5273290f2..000000000
--- a/db/migrate/20200114071420_migrate_course_group_member_count.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-class MigrateCourseGroupMemberCount < ActiveRecord::Migration[5.2]
-  def change
-    CourseGroup.reset_column_information
-    CourseGroup.find_each do |group|
-      CourseGroup.reset_counters(group.id, :course_members_count)
-    end
-  end
-end