Abstract:LEACH is a classical hierarchical routing protocols. However, the algorithm is adaptive cluster head randomly generated. It does not consider the current node residual energy, so the choice of cluster head will make the network energy consumption which is not balanced, resulting in network premature death. In order to avoid less energy because elected as cluster head node after the premature death, we propose a new routing protocol(LEACH-PHQ). The improved algorithm in the cluster head selection phase took into account the residual energy of each node in the data transfer phase using data fusion transmission strategy. Experimental results show that the improved method is effective to reduce the energy consumption of the network and the network load balance, which can extend the network lifetime.