Provided is a fast handover method using candidate care-of addresses (CoAs). The method includes obtaining Internet protocol (IP) address information of access routers located adjacent to a previous access router (PAR) to which a mobile node is connected; setting more than one candidate CoAs based on the IP address information; and selecting from the more than one candidate CoAs a CoA of a sub-net to which the mobile node is to move and performing a handover based on the selected CoA. Therefore, a delay and a packet loss caused by the setting of a new NCoAs can be prevented.