diff --git a/app/controllers/oauth/educoder_controller.rb b/app/controllers/oauth/educoder_controller.rb
index f27b8b6d3..8ed537d6c 100644
--- a/app/controllers/oauth/educoder_controller.rb
+++ b/app/controllers/oauth/educoder_controller.rb
@@ -25,7 +25,7 @@ class Oauth::EducoderController < Oauth::BaseController
 
           redirect_to callback_url
         else
-          redirect_to oauth_register_path(login: login, callback_url: callback_url)
+          redirect_to oauth_register_path(login: login, mail: mail, callback_url: callback_url)
         end
       end
     rescue WechatOauth::Error => ex
diff --git a/app/views/oauth/register.html.erb b/app/views/oauth/register.html.erb
index 59a3d4857..96778fa06 100644
--- a/app/views/oauth/register.html.erb
+++ b/app/views/oauth/register.html.erb
@@ -11,7 +11,7 @@
       </div>
       <div class="indexInfo">
         <span>邮箱：</span>
-        <%= text_field_tag :mail, '', placeholder: '请输入绑定邮箱', maxlength: 40, id: 'email' %>
+        <%= text_field_tag :mail, params[:mail], placeholder: '请输入绑定邮箱', maxlength: 40, id: 'email' %>
         <p class="checkInfo emailCheck"><span></span></p>
       </div>
       <div class="indexInfo">