diff --git a/lib/plugins/acts_as_attachable/lib/acts_as_attachable.rb b/lib/plugins/acts_as_attachable/lib/acts_as_attachable.rb
index 3059c23c9..f6dc31c64 100644
--- a/lib/plugins/acts_as_attachable/lib/acts_as_attachable.rb
+++ b/lib/plugins/acts_as_attachable/lib/acts_as_attachable.rb
@@ -54,11 +54,13 @@ module Redmine
 
         def attachments_deletable?(user=User.current)
           if (self.has_attribute?(:course) ||self.has_attribute?(:course_id)) && self.course
+            #默认给予删除自己上传的附件的权限
             (respond_to?(:visible?) ? visible?(user) : true) &&
-                user.allowed_to?(self.class.attachable_options[:delete_permission], self.course)
+                (user.allowed_to?(self.class.attachable_options[:delete_permission], self.course) || (self.has_attribute?(:author_id) && self.author == user))
           else
+            #默认给予删除自己上传的附件的权限
             (respond_to?(:visible?) ? visible?(user) : true) &&
-                user.allowed_to?(self.class.attachable_options[:delete_permission], self.project)
+                (user.allowed_to?(self.class.attachable_options[:delete_permission], self.project) || (self.has_attribute?(:author_id) && self.author == user))
           end
         end