Abstract: An optimal mobile IPv6 model based on hierarchical mechanism is proposed to optimize the performance of localized mobile node (MN) in remote region. The traditional hierarchical managing mechanism (HMIPv6) is improved through the proposed self-adapting binding update policy. In the policy, a map edge router (MER) is introduced with the passing binding match algorithm we designed and two new binding messages (binding update request, and binding update acknowledgement) provided. Thus, MER could directly intercept packets from or to MN to eliminate the triangle route within HMIPv6 and optimize the performance of MN. Moreover, the intra-CN processing policy is also proposed in terms of the location of correspondent node (CN) to reduce the communicating cost between intra-CN and MN. As a consequence, the model is capable of self-adapting to exterior network changes so as to improve the utilization of network resources. Finally, the prototype has verified the availability of the model.