On the basis of LEACH,this paper proposes an assistant cluster head clustering algorithm.In Wireless Sensor Network(WSN),according to the cluster head node's geographical location,remaining members of the cluster energy and the number of nodes in the cluster,the algorithm can dynamically determine whether to generate assistant cluster head and choose appropriate nodes in it,thus reducing the energy consumption of cluster head communication,while addressing some of the cluster head and base station communications.Simulation results show that this algorithm can effecti...