diff --git a/app/api/mobile/apis/courses.rb b/app/api/mobile/apis/courses.rb
index 08c7adf10..ce02f4249 100644
--- a/app/api/mobile/apis/courses.rb
+++ b/app/api/mobile/apis/courses.rb
@@ -228,6 +228,18 @@ module Mobile
           present :status, 0
         end
 
+        desc '课程课件'
+        params do
+          requires :token, type: String
+          requires :course_id,type: Integer,desc: '课程id'
+        end
+        get ":course_id/attachments" do
+          cs = CoursesService.new
+          count = cs.course_attachments params
+          present :data, count, with: Mobile::Entities::Attachment
+          present :status, 0
+        end
+
       end
     end
   end
diff --git a/app/api/mobile/entities/attachment.rb b/app/api/mobile/entities/attachment.rb
index 510db89be..080b24558 100644
--- a/app/api/mobile/entities/attachment.rb
+++ b/app/api/mobile/entities/attachment.rb
@@ -16,8 +16,11 @@ module Mobile
           end
         end
       end
+      attachment_expose :id
       attachment_expose :filename
       attachment_expose :description
+      attachment_expose :downloads
+      attachment_expose :quotes
     end
   end
 end
\ No newline at end of file
diff --git a/app/services/courses_service.rb b/app/services/courses_service.rb
index e91883bee..b992665d3 100644
--- a/app/services/courses_service.rb
+++ b/app/services/courses_service.rb
@@ -428,6 +428,17 @@ class CoursesService
     result
   end
 
+   # 课程课件
+   def course_attachments params
+     result = []
+     @course = Course.find(params[:course_id])
+     @attachments = @course.attachments.order("created_on desc")
+     @attachments.each do |atta|
+       result << {:filename => atta.filename,:description => atta.description,:downloads => atta.downloads,:quotes => atta.quotes.nil? ? 0 :atta.quotes  }
+     end
+     result
+   end
+
   private
   def show_homework_info course,bid,current_user,is_course_teacher
     author_real_name = bid.author.lastname + bid.author.firstname