关键词: 分段模式，地址分配算法，路由算法，树形路由

Abstract: The address allocation mechanism is presented in each network, which is the basis for communication and data transmission. This paper presented an address allocation method with segmented model and analyzes its principles,while introduced the tree routing algorithm based on the distribution of this address.

Key words: Segmented model, Address allocation algorithm, Routing algorithm, Tree routing