diff --git a/app/models/attachmentstype.rb b/app/models/attachmentstype.rb
index 6a37cc51..fb774836 100644
--- a/app/models/attachmentstype.rb
+++ b/app/models/attachmentstype.rb
@@ -3,7 +3,7 @@ class Attachmentstype < ActiveRecord::Base
   has_many  :attachments,  :foreign_key => "attachtype",:primary_key => "id"
 
   # 当前使用的文件内容分类列表
-  @@SuffixArr = ['pdf','zip','doc','docx','rar','txt','jpg','bmp','xls','xlsx']
+  @@SuffixArr = ['pdf','zip','doc','docx','ppt','pptx','rar','txt','jpg','bmp','xls','xlsx']
 
   def suffixArr
     @@SuffixArr