diff --git a/app/controllers/myshixuns_controller.rb b/app/controllers/myshixuns_controller.rb
index 0df82118d..31395def2 100644
--- a/app/controllers/myshixuns_controller.rb
+++ b/app/controllers/myshixuns_controller.rb
@@ -267,7 +267,7 @@ class MyshixunsController < ApplicationController
           @content_modified = 1
 
           author_name = current_user.real_name
-          author_email = current_user.mail
+          author_email = current_user.git_mail
           message = params[:evaluate] == 0 ? "System automatically submitted" : "User submitted"
           uid_logger("112233#{author_name}")
           uid_logger("112233#{author_email}")
@@ -276,7 +276,7 @@ class MyshixunsController < ApplicationController
                                             message: message,
                                             content: content,
                                             author_name: author_name,
-                                            author_email: "author_email@email.com")
+                                            author_email: author_email)
         end
       end
 
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index cdd647ebd..993c132dc 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -30,8 +30,9 @@ module ApplicationHelper
   end
 
   # git用户
+  # git用户命名规则：login+"@educoder.net"
   def git_username(email)
-    User.find_by_mail(email)
+    User.find_by_mail(email) || User.find_by_login(mail.split("@").first)
   end
 
   # 不同的类型扩展不同的目录
diff --git a/app/models/user.rb b/app/models/user.rb
index 26f0fa544..89918551e 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -156,6 +156,9 @@ class User < ApplicationRecord
     Token.where(:user_id => id, :action => 'session', :value => value).delete_all
   end
 
+  def git_mail
+    mail || "#{login}@educoder.net"
+  end
 
   # 学号
   def student_id