The invention discloses a mobile office identity authentication management system which comprises an information signing and issuing unit, a login storage unit, a secret key management unit and a certificate management unit. The information signing and issuing unit is used for conducting whole process management on a digital certificate of a system in the user-defined period; the login storage unit is used for conducting identity authentication and register of a user in the system and being in charge of user information inputting, user information checking, certificate application, certificate revocation and certificate renewal; the secret key management unit is used for conducting management on secret key information, and the management comprises the initialization of a secret key management server and secret key monitoring service; the certificate management unit is used for conducting management on the system, and the management comprises the initialization of the system and checking and uploading of a user application. The mobile office identity authentication management system has the advantages that the safe reliability is high, multiple identity authentication forms are adopted, the security of office system internal information can be monitored in real time, the leakage of information can be effectively prevented, the good extendibility is achieved, and the security authentication requirements of enterprise units can be fully met.