The handover latency and the packet loss rate are important criterions that determine if the mobile multicast algorithm could adapt to real-time multicast appliances. This paper proposes a multicast fast handover algorithm based on neighbor hood information exchange (M-FMIPv6/NIE). Before L2 trigger event occurs, M-FMIPv6/NIE can configure new care-of-address (nCoA) and request new access routers (AR) to join multicast tree. The performance analysis and simulation results indicate that, the multicast service disruption time of M-FMIPv6/NIE is less than that of existing multicast fast handover algorithms and it has good performance in buffer size and packet loss rate.