diff --git a/app/controllers/concerns/login_helper.rb b/app/controllers/concerns/login_helper.rb
index 1752e4f6c..8891ad029 100644
--- a/app/controllers/concerns/login_helper.rb
+++ b/app/controllers/concerns/login_helper.rb
@@ -11,6 +11,7 @@ module LoginHelper
 
   def set_autologin_cookie(user)
     token = Token.get_or_create_permanent_login_token(user, "autologin")
+    Rails.logger.info "###### def set_autologin_cookie and get_or_create_permanent_login_token result: #{token&.value}"
     cookie_options = {
       :value => token.value,
       :expires => 1.month.from_now,
@@ -21,9 +22,11 @@ module LoginHelper
     if edu_setting('cookie_domain').present?
       cookie_options = cookie_options.merge(domain: edu_setting('cookie_domain'))
     end
-    unless  cookies[autologin_cookie_name].present?
-      cookies[autologin_cookie_name] = cookie_options
-    end
+    # unless  cookies[autologin_cookie_name].present?
+    #   cookies[autologin_cookie_name] = cookie_options
+    # end
+    cookies[autologin_cookie_name] = cookie_options
+
     # for action cable
     cookies.signed[:user_id] ||= user.id
 
diff --git a/app/controllers/oauth/educoder_controller.rb b/app/controllers/oauth/educoder_controller.rb
index bc1a0cb6d..b194f6922 100644
--- a/app/controllers/oauth/educoder_controller.rb
+++ b/app/controllers/oauth/educoder_controller.rb
@@ -10,26 +10,20 @@ class Oauth::EducoderController < Oauth::BaseController
       open_user= OpenUsers::Educoder.find_by(uid: login)
 
       if open_user.present? && open_user.user.present? && open_user.user.email_binded?
-        if current_user != open_user.user
-          logout_user
-          successful_authentication(open_user.user)
-        end
+        Rails.logger.info "######## open_user exist and open_user.user exsit and email is binded ok"
+        successful_authentication(open_user.user)
+
         redirect_to callback_url
       else
-        if current_user.blank? || !current_user.logged?
-          user = User.find_by(login: login)
-          if user
-            successful_authentication(user)
-            OpenUsers::Educoder.create!(user: user, uid: user.login)
+        Rails.logger.info "######## open user not exits"
+        user = User.find_by(login: login)
+        if user
+          OpenUsers::Educoder.create!(user: user, uid: user.login)
+          successful_authentication(user)
 
-            redirect_to callback_url
-          else
-            redirect_to oauth_register_path(login: login, callback_url: callback_url)
-          end
-        else
-          # forge平台已登录
-          OpenUsers::Educoder.create!(user: current_user, uid: login)
           redirect_to callback_url
+        else
+          redirect_to oauth_register_path(login: login, callback_url: callback_url)
         end
       end
     rescue WechatOauth::Error => ex
diff --git a/app/controllers/oauth_controller.rb b/app/controllers/oauth_controller.rb
index 1cdeb4aa3..5da9297a6 100644
--- a/app/controllers/oauth_controller.rb
+++ b/app/controllers/oauth_controller.rb
@@ -65,22 +65,22 @@ class OauthController < ApplicationController
     platform = params[:plathform] || 'educoder'
 
     if User.where(mail: email).exists?
-      render_error("该邮箱已使用过.") and return
-    end
-
-    result = autologin_register(login, email, password, platform)
-    logger.info "[Oauth educoer] =====#{result}"
-    if result[:message].blank?
-      logger.info "[Oauth educoer] ====auto_register success"
-      user = User.find result[:user][:id]
-      successful_authentication(user)
-      OpenUsers::Educoder.create!(user: user, uid: user.login)
-
-      render_ok({callback_url: callback_url})
-      # redirect_to callback_url
+      render json: { email_exist: '该邮箱已使用过' }
     else
-      logger.info "[Oauth educoer] ====auto_register failed."
-      render :action => "auto_register"
+      result = autologin_register(login, email, password, platform)
+      logger.info "[Oauth educoer] =====#{result}"
+      if result[:message].blank?
+        logger.info "[Oauth educoer] ====auto_register success"
+        user = User.find result[:user][:id]
+        successful_authentication(user)
+        OpenUsers::Educoder.create!(user: user, uid: user.login)
+
+        render json: { callback_url: callback_url }
+        # redirect_to callback_url
+      else
+        logger.info "[Oauth educoer] ====auto_register failed."
+        render :action => "auto_register"
+      end
     end
   end
 
diff --git a/app/models/token.rb b/app/models/token.rb
index cd61090be..d40388440 100644
--- a/app/models/token.rb
+++ b/app/models/token.rb
@@ -27,8 +27,10 @@ class Token < ActiveRecord::Base
 
   def self.get_or_create_permanent_login_token(user, type)
     token = Token.get_token_from_user(user, type)
+    Rails.logger.info "###### Token.get_token_from_user result: #{token&.value}"
     unless token
       token = Token.create(:user => user, :action => type)
+      Rails.logger.info "###### Token.get_token_from_user is nul and agine create token: #{token&.value}"
     else
       token.update_attribute(:created_on, Time.now)
     end
@@ -37,8 +39,10 @@ class Token < ActiveRecord::Base
 
   def self.get_token_from_user(user, action)
     token = Token.where(:action => action, :user_id => user).first
+    Rails.logger.info "######  self.get_token_from_user query result: #{token&.value}"
     unless token
       token = Token.create!(user_id: user.id, action: action)
+      Rails.logger.info "######  self.get_token_from_user query is nil and create result: #{token&.value}"
     end
     token
   end
diff --git a/app/views/oauth/register.html.erb b/app/views/oauth/register.html.erb
index d9b39543c..59a3d4857 100644
--- a/app/views/oauth/register.html.erb
+++ b/app/views/oauth/register.html.erb
@@ -60,7 +60,7 @@
       success: function(data) {
         console.log(data)
         if (data) {
-          if(data.message){
+          if(data.email_exist){
             $(".emailCheck span").html("该邮箱已存在.");
             return;
           }