diff --git a/app/models/message.rb b/app/models/message.rb
index f0e2ff2d3..f59f778a8 100644
--- a/app/models/message.rb
+++ b/app/models/message.rb
@@ -40,7 +40,6 @@ class Message < ActiveRecord::Base
   # 课程/项目 消息
   has_many :course_messages, :class_name =>'CourseMessage', :as => :course_message, :dependent => :destroy
   has_many :forge_messages, :class_name => 'ForgeMessage', :as => :forge_message, :dependent => :destroy
-  has_many :org_activities, :class_name => 'OrgActivity', :dependent => :destroy
   has_many :at_messages, as: :at_message, dependent: :destroy
 
   has_many :ActivityNotifies,:as => :activity, :dependent => :destroy
@@ -152,7 +151,7 @@ class Message < ActiveRecord::Base
   end
 
   def org_subfield_editable_by?(usr)
-    usr && usr.logged? && usr.admin?  && usr.admin_of_org?(self.board.org_subfield.organization)
+    usr && usr.logged? && (usr.admin?  || self.author == usr ||usr.admin_of_org?(self.board.org_subfield.organization))
   end
 
   def course_destroyable_by?(usr)