diff --git a/db/migrate/20140618155324_migrate_course_file_type.rb b/db/migrate/20140618155324_migrate_course_file_type.rb
new file mode 100644
index 000000000..6cbf3b878
--- /dev/null
+++ b/db/migrate/20140618155324_migrate_course_file_type.rb
@@ -0,0 +1,12 @@
+class MigrateCourseFileType < ActiveRecord::Migration
+  def change
+    # 迁移原课程资源文件类型
+    Attachment.all.each do |attach|
+      if attach.container_type == "Course" && attach.attachtype == 1
+        attach.attachtype = 4
+        attach.save
+      end
+    end
+  end
+
+end
diff --git a/db/schema.rb b/db/schema.rb
index 18a3fb841..8c6ed01fe 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20140618105214) do
+ActiveRecord::Schema.define(:version => 20140618155324) do
 
   create_table "activities", :force => true do |t|
     t.integer "act_id",   :null => false