According to the idea of“generating chain forward to the base station,as far as possible to build cluster”, this paper put forward an algorithm of forward cluster with increasing radius for WSN,which integrate the advantag⁃es of structure of cluster and chain. In this algorithm,all nodes build cluster with a smaller radius R0 ,then the nodes that have not joined in network choose its next-hop nodes by increasing the radius to 2R0 ,and introducing the thought of forward transmission. Next,the nodes that still have not joined in the network increase the radius in the proper order to choose its next-hop nodes until all nodes join in the network. The new algorithm generate a rout⁃ing structure that include cluster,chain and tree forms. Simulation results show that,the algorithm can extend the lifetime of network about 10%.%结合簇类结构和链式结构的优点，按照“向基站方向成链，链中尽量成簇”的思想，提出一种基于半径递增有向成簇的WSN路由算法。网络中节点首先在较小半径R0范围内进行组簇后，未加入网络的节点增大组网半径，并引入前向传输的概念，在半径2R0的前向传输区域内根据权值比较选择下一跳节点，而后继续增大组网半径，直至所有节点进入网络。算法生成一种综合了簇、链、树三种结构的混合路由路径。仿真数据表明，新算法能有效优化网络路由结构，提高能量效率和均衡性能，能够延长网络生存周期10%左右。
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