Abstract: Aiming at the bottleneck problems encountered by traditional distribution networks in supporting the high proportion of distributed new energy consumption and the coordinated interaction of source-grid-load-storage,this paper builds a high reliability medium voltage honeycomb distribution network structure based on the honeycomb theory.Firstly,the domestic and international research status of the medium voltage distribution network is summarized,and the advantages and disadvantages of medium voltage honeycomb distribution network structure are analyzed in four dimensions,such as security,practicality,reliability and economy. Secondly,combining with the development trend of regional DC resources,the transition strategy of medium-voltage honeycomb distribution network is proposed in terms of AC grouping network transition strategy and AC-DC grouping network transition strategy.Then,the preliminary exploration of key technologies of honeycomb distribution network is carried out,and the soft open point（SOP）technical route and capacity selection principles are compared and analyzed.Finally,taking a pilot area as an example,the network transformation and upgrading are demonstrated to guide the precise planning and orderly promotion of the honeycomb distribution network. The rationality and feasibility of the medium-voltage honeycomb distribution network structure and transition strategy are verified.