diff --git a/app/controllers/attachments_controller.rb b/app/controllers/attachments_controller.rb
index 1c02326a7..73b1849c1 100644
--- a/app/controllers/attachments_controller.rb
+++ b/app/controllers/attachments_controller.rb
@@ -150,6 +150,7 @@ class AttachmentsController < ApplicationController
       ori = Attachment.find_by_id(attach_id)
       next if ori.blank?
       attach_copied_obj = ori.copy
+      attach_copied_obj.tag_list.add(ori.tag_list) # tag关联
       attach_copied_obj.container = obj
       attach_copied_obj.created_on = Time.now
       attach_copied_obj.author_id = User.current.id