The invention discloses a method for initiative safety prevention of leased vehicles and also provides a corresponding vehicle-based terminal of the initiative safety prevention type at the same time in order to integrate a GPS technology, a GSM technology and an IC card technology for management of leased vehicles. GPS satellite positioning data and vehicular state information are received and through converting the data to an agreed format, the information is submit back to a center via a GSM network; and a command given by the center is received and measures such as monitoring, listening, oil- and/or power-cutting, parameter modification, etc. are taken. A set of GPS vehicle-based terminal and an IC card system mating therewith are mounted on each leased vehicle to record lease time and other information of the leased vehicle in the IC card. Once expiration data is reached, a leaseholder returns the vehicle or extends the lease, or else the vehicle cannot be ignited normally, thus achieving really the initiative safety prevention and overcoming defects such as a relatively simple function of safety prevention devices of existing taxicabs.