diff --git a/app/controllers/installations_controller.rb b/app/controllers/installations_controller.rb
index 88c43cf69..dd7253f2b 100644
--- a/app/controllers/installations_controller.rb
+++ b/app/controllers/installations_controller.rb
@@ -28,6 +28,7 @@ class InstallationsController < ApplicationController
   def auth_active
     begin
       @bot = Bot.find params[:id]
+      tip_exception("该Bot已激活") if Doorkeeper::Application.find_by(uid: @bot.client_id, secret: @bot.client_secret).present?
       @bot.client_id = Doorkeeper::OAuth::Helpers::UniqueToken.generate if params[:client_id].blank?
       @bot.client_secret = Doorkeeper::OAuth::Helpers::UniqueToken.generate if params[:client_secret].blank?
       @bot.private_key = OpenSSL::PKey::RSA::generate(2048).to_s