Mobile Ad Hoc network is a multihop temporary network composed of a set of mobile intelligent terminals with no center. According to the related questions of mobile Ad Hoc network address configuration, on the basis of the existing application in mobile Ad Hoc network address automatic configuration mechanism, this paper discusses Binary Tree Model-based Dynamic Address Allocation Mechanism. The mechanism dynamically configures a unique address for the nodes according to their relative positions in network topology, reduces control overhead, and with the help of node number, processes network merger and division to effectively address resource management. It has good scalability, and is suitable for mobile Ad Hoc network.