How to reduce the energy consumption of nodes effectively and prolong the lifetime of network is the hot topic for research on wireless sensor networks.The classic low energy adaptive clustering hierarchy protocol is analyzed.A novel algorithm is improved.The algorithm controlls the redundant nodes’ sleeping and uses intermediary node to transfer further nodes’ information

which aims to reduce the number of redundant nodes and data communication amount of cluster head.The energy consumption of network is reduced.The results of simulation show that the novel algorithm can save energy effectively

balance energy consumption of the nodes and prolong the network lifetime.