Multiple mobile router synchronizing method for mobile internet service with multiple mobile routers

A multiple mobile router synchronizing method for a mobile internet service with a multiple mobile router structure is provided to facilitate management of addresses of mobile internet terminals by setting the addresses based on the same received prefix from a plurality of mobile routers included in one moving network. A multiple mobile router synchronizing method for a mobile internet service with a multiple mobile router structure includes the steps of: storing a mobile router list having at least two mobile routers(14,15); receiving allotment of a network prefix to be used in a mobile network by at least one of two mobile routers from an address management server or a home agent; exchanging prefix information allotted between at least two mobile routers to synchronize the information; and transmitting the synchronized prefix information to all mobile terminals in the same mobile network(19) through egress interfaces(21,22) by each of two mobile routers.