WEB application single sign-on proxy method and device, sign-on method and server

The invention relates to a WEB application single sign-on proxy method, a WEB application single sign-on proxy device, a login method and a server. The WEB application single sign-on proxy method comprises the steps of receiving an access request sent to a WEB application by a terminal, performing identity verification on the terminal, forwarding the access request to the WEB application after the identity verification is passed, receiving a service page of the WEB application and pushing the service page to the terminal. According to the application, single sign-on can be realized on the basis of not transforming the existing WEB application, the single sign-on cost is reduced, and the user experience is improved. 本申请涉及一种WEB应用单点登录代理方法、装置、登录方法及服务器，WEB应用单点登录代理方法包括接收终端向WEB应用发送的访问请求，对终端进行身份验证，身份验证通过后向WEB应用转发访问请求，接收WEB应用的服务页面并推送至终端。本申请可以在不改造现有WEB应用基础上实现单点登录，减少单点登录成本，提升用户体验。