The present disclosure provides a system for backing up and recovering data, which comprises a mobile terminal and a server. The mobile terminal comprises: a parameter backup module, being configured to receive a lockup request for backing up system setting parameters of the mobile terminal, and enable the mobile terminal to transmit the system setting parameters to a network server according to the backup request so that the system setting parameters are backed up by the network server; a request-for-recovery module, being configured to receive a recovery request for recovering the system setting parameters to the mobile terminal and enable the mobile terminal to transmit the recovery request to the network server; and a recovery control module, being configured to receive the system setting parameters that are transmitted by the network server according to the recovery request and control to recover a system state of the mobile terminal to a state that is set by the system setting parameters. In this way, the present disclosure can back up the system setting parameters of the mobile terminal to the server, and recover the system setting parameters from the server to the mobile terminal during a data recovery. Thus, the present disclosure brings great convenience and a new experience to users.