diff --git a/lib/tasks/public_course.rake b/lib/tasks/public_course.rake
index 9c5065982..7ed492968 100644
--- a/lib/tasks/public_course.rake
+++ b/lib/tasks/public_course.rake
@@ -65,14 +65,56 @@ namespace :public_course do
 
 
   # 更新某个课程的某类时间
-  # 执行示例  bundle exec rake public_course:student tiems=149,2903
+  # 执行示例  bundle exec rake public_course:student args=2903,1
   task :time => :environment do
-    course_id = ENV['args'].split(",")[0] # 对应课堂的id
-    satus = ENV['args'].split(",")[1]
+    # course_id = ENV['args'].split(",")[0] # 对应课堂的id
+    # type = ENV['args'].split(",")[1]
 
     course = Course.find(course_id)
 
-    hour = (6..24).to_a.sample(1).first
+    case type.to_i
+    when 1
+      # 讨论区
+
+    when 2
+      # 作业
+        course.homework_commons.each do |homework|
+        created_at = random_time(start_time, end_time)
+        publish_time = random_larger_time created_at, start_time, end_time
+        end_time = random_larger_time publish_time, start_time, end_time
+        updated_at = end_time
+
+        homework.update_columns(publish_time: publish_time, end_time: end_time, created_at: created_at, updated_at: updated_at)
+        homework.homework_detail_manual.update_columns(comment_status: 6, created_at: created_at, updated_at: updated_at)
+      end
+    when 3
+      # 试卷
+      course.exercises.each do |exercise|
+        created_at = random_time start_time, end_time
+        publish_time = random_larger_time created_at, start_time, end_time
+        end_time = random_larger_time publish_time, start_time, end_time
+        updated_at = end_time
+
+        exercise.update_columns(publish_time: publish_time, end_time: end_time, created_at: created_at, updated_at: updated_at, exercise_status: 3)
+      end
+    when 4
+      # 资源
+      course.attachments.each do |atta|
+        created_on = random_time start_time, end_time
+
+        atta.update_columns(is_publish: 1, created_on: created_on)
+      end
+    end
+
+  end
+
+  def min_swith(time)
+    puts time
+    return time < 9 ? "0#{time}" : time
+  end
+
+  def random_time(start_time, end_time)
+    hour = (6..23).to_a.sample(1).first
     min = rand(60)
     sec = rand(60)
 
@@ -83,17 +125,15 @@ namespace :public_course do
     time = "#{date} #{min_swith(hour)}:#{min_swith(min)}:#{min_swith(sec)}"
 
     puts time
-    case type
-    when 1
-      # 讨论区
-
-    end
-
+    time
   end
 
-  def min_swith(time)
-    puts time
-    return time < 9 ? "0#{time}" : time
+  def random_larger_time(time, start_time, end_time)
+    large_time = random_time(start_time, end_time)
+    while large_time <= time
+      large_time = random_time(start_time, end_time)
+    end
+    large_time
   end
 end
 
diff --git a/lib/tasks/publick_course.rake b/lib/tasks/publick_course.rake
index 2c12a859b..7e6f53a91 100644
--- a/lib/tasks/publick_course.rake
+++ b/lib/tasks/publick_course.rake
@@ -20,7 +20,6 @@ namespace :public_course do
         puts user_id
         unless CourseMember.exists?(course_id: course_id, user_id: user_id)
           CourseMember.create!(course_id: course_id, user_id: user_id, role: 4)
-          CourseAddStudentCreateWorksJob.perform_later(course_id, [user_id])
         end
       end
     end