Handover method of power consumption based and apparatus thereof

A handover method between dualized network based on power consumption and an apparatus thereof are provided to generate candidate network list by calculating prospect power consumption calculated by network and traffic class and to prevent unnecessary hand over. A network list capable of handover based on power consumption of the mobile terminal prospected about traffic class and each network among dualized network is made(S120). A handover network is selected based on the user preference and the traffic class in network on the list(S130). The minimum usage time of the terminal is predicted by the remainder of a battery about prospect power consumption calculated based on the interface capacity of network and traffic class of the mobile terminal.