The present invention relates to a mobility management system and method for distributed mobility management network providing initial connection and handoff processes of mobile nodes to support IP multicast, and a method of selecting agents and networks to receive multicast data by anchor agents in the distributed mobility management network, comprising: a mobile node receiving network access services by conducting wireless communications in the distributed mobility management network through the wireless transmitter-receiver as a device consists of a wireless transmitter-receiver, an antenna and a control unit; a mobility management anchor agent supporting the mobility of the above mobile node, and taking the role of anchor each time the mobile node moves; a mobility management information server receiving information on agent or network transmitting multicast channel and data currently received from the above mobility management anchor agent, and then registering and updating the information.