General authentication authorization service system and method

A universal certification authorization system and method capable of realizing centralized subscriber certification authorization service in distributed network, which contains an universal certification authorization server, plurality of user terminal computer and database, wherein the universal certification authorization server contains a certification device for affirming user access right to plurality of servers and an authorization device for affirming user access right and generating service credential, user terminal computer for providing an interactive interface for user input name and password to obtain authorization and service credential, database for storing user list, authorization and service credential.