In order to deal with the energy structure conversion and the over-voltage problem caused by the energy structure transformation and the high proportion of new energy access to the distribution network, the cluster division and voltage control method for this kind of distribution network are proposed. By optimizing the active power and reactive power of the new energy source, the optimal active power reduction and reactive voltage compensation are realized.A cluster performance index based on electrical distance and cluster voltage regulation ability is proposed. Based on this, the distribution network is divided into clusters, and the cluster voltage optimization control strategy is proposed, which combines the autonomous optimization within the cluster with the coordinated optimization between clusters. The correctness and feasibility of cluster partition and voltage control scheme are verified by simulation.