diff --git a/app/api/mobile/apis/courses.rb b/app/api/mobile/apis/courses.rb
index 8b167980d..6d68d549a 100644
--- a/app/api/mobile/apis/courses.rb
+++ b/app/api/mobile/apis/courses.rb
@@ -213,7 +213,7 @@ module Mobile
           present :status, 0
         end
 
-        desc '课程动态'
+        desc '用户课程动态'
         params do
           requires :token, type: String
         end
diff --git a/app/services/courses_service.rb b/app/services/courses_service.rb
index 1f5ca7894..7e80f415c 100644
--- a/app/services/courses_service.rb
+++ b/app/services/courses_service.rb
@@ -333,24 +333,38 @@ class CoursesService
   end
 
   def course_dynamic(params,current_user)
-    course = Course.find(params[:id])
-    if current_user.nil? || !(current_user.admin? || course.is_public == 1 || (course.is_public == 0 && current_user.member_of_course?(course)))
-      raise '403'
+
+    @user = User.find(params[:id])
+    if !current_user.admin? && !@user.active?
+      raise '404'
+      return
     end
-    count,is_teacher = get_course_anonymous_evaluation current_user,course
-    if is_teacher
-      student_commit_number = count
+    if current_user == @user || current_user.admin?
+      membership = @user.coursememberships.all
     else
-      need_anonymous_comments_count = count
+      membership = @user.coursememberships.all(:conditions => Course.visible_condition(current_user))
     end
-    news_count = course.news.count
-    message_count = course.journals_for_messages.count
+    membership.sort! {|older, newer| newer.created_on <=> older.created_on }
     result = []
-    result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => 1,:count => message_count}
-    result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => 2,:count => need_anonymous_comments_count}
-    result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => 3,:count => student_commit_number}
-    result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => 4,:count => news_count}
-    #{:course_name => course.name,:need_anonymous_comments_count=>need_anonymous_comments_count,:student_commit_number=>student_commit_number,:news_count=> news_count,:message_count=>message_count}
+    membership.each do |mp|
+      course = mp.course
+      unless current_user.nil? || !(current_user.admin? || course.is_public == 1 || (course.is_public == 0 && current_user.member_of_course?(course)))
+        count,is_teacher = get_course_anonymous_evaluation current_user,course
+        if is_teacher
+          student_commit_number = count
+        else
+          need_anonymous_comments_count = count
+        end
+        news_count = course.news.count
+        message_count = course.journals_for_messages.count
+
+        result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => 1,:count => message_count}
+        result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => 2,:count => need_anonymous_comments_count}
+        result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => 3,:count => student_commit_number}
+        result << {:course_name => course.name,:course_id => course.id,:course_img_url => url_to_avatar(course),:type => 4,:count => news_count}
+        #{:course_name => course.name,:need_anonymous_comments_count=>need_anonymous_comments_count,:student_commit_number=>student_commit_number,:news_count=> news_count,:message_count=>message_count}
+      end
+    end
     result
   end