The invention discloses a system for one-station registering, logging and all-web authentication, comprising a registering and logging module, a linking module, a safety module, a system management module, a third party user center and a management module, wherein the third party user center is the user management center commonly used by the system and the second party website registering and logging system; the linking module realizes seamless connection between the registering and logging sub-module and the third party user center, and between the third party user center and the second party website registering and logging system; the safety module is connected with all modules of the system and the third party user center; and the system management module is in charge of the arrangement, addition and management of all modules of the system. In the invention, the one-station registering and logging and all-web authentication can be realized, the service of the website can be enjoyed directly without repeatedly registering and logging, the user information and the online behavior can be uniformly managed effectively, the safety of the user information can be ensured, the online life of the user can be managed, and the system can become the online life management center of the user.