Abstract: In order to improve the energy utilization of wireless sensor network, a kind of energy efficient clustering routing optimization algorithm is put forward, which is based on the research of clustering network. The algorithm optimizes the cluster head election strategy of LEACH, and it also consider the node energy factor in the cluster head election stage. In data transmission stage, the algorithm establishes multi-hop routing algorithm with the help of the linear equation. The simulation results show that the proposed algorithm can effectively improve the network energy utilization.