diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 23f6870c8..a1f6a5495 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -73,8 +73,7 @@ class UsersController < ApplicationController
 
     @user_url = "/users/#{@user.login}"
     @career = Career.where(status: true).order("created_at asc").pluck(:id, :name)
-    ec_user = EcSchoolUser.where(:user_id => current_user.id).first
-    @auth = ec_user ? "#{@old_domain}/ecs/department?school_id=#{ec_user.school_id}" : nil
+    @auth =  User.current.ec_school.present? ? "#{@old_domain}/ecs/department?school_id=#{User.current.ec_school}" : nil
   end
 
   # 用户回复功能
diff --git a/app/models/user.rb b/app/models/user.rb
index f2d9c7fb1..a95776be9 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -497,6 +497,13 @@ class User < ApplicationRecord
     )
   end
 
+  # 工程认证的学校
+  def ec_school
+    school_id = self.ec_school_users.pluck(:school_id).first ||
+        self.ec_major_schools.pluck(:school_id).first ||
+        (self.ec_course_users.first && self.ec_course_users.first.try(:ec_course).try(:ec_year).try(:ec_major_school).try(:school_id))
+  end
+
   # 登录，返回用户名与密码匹配的用户
   def self.try_to_login(login, password)
     login = login.to_s.strip