In order to solve problem of energy consumption uneven distribution of wireless sensor networks（WSNs）

extend the life cycle of WSNs

a WSNs routing protocol based on improved fuzzy—C means（FCM）clustering and the minimum tree is proposed.In this algorithm

FCM clustering algorithm after genetic optimization is introduced for clustering of nodes in node clustering phase.After the node clustering is completed

the node in the cluster will run for the main and sub-cluster head of the cluster

according to its own energy and its position and distance from the base station.The algorithm not only reduces the possibility of clustering allocation into local optimum

but also makes the cluster head distribution more reasonable.At the same time

the algorithm also gives different tasks to the main and sub-cluster head to disperse the energy consumption of the cluster head.And using the near-optimal minimum aggregation tree algorithm to plan the data transmission path of the sub-cluster head to the base station

which can make the energy consumption distribution more reasonable.Thus

the life cycle of WSNs is increased.The experimental results show that this algorithm can better utilize the node energy and extend the life cycle of WSNs.