With the ever-increasing exhaustion of fossil energy，renewable energy like wind power，photovoltaic as well as energy storage system and electric vehicles is gradually gaining peoples attention.However，losses during the conversion are inevitable when new energy sources are connected to the network.By adopting the direct current（DC）distribution technology，the cost of conversion can be appreciably reduced.In addition，DC distribution network safe，economical，and highly efficient operation can be realized by designing the converter commands rationally and effectively.The characteristics and advantages of the distribution network are described first，followed by a brief account of its energy structure.Then the latest progress in two aspects，namely，the energy optimizing management technology and the coordinated control strategy among converters based on energy management optimization commands is summarized.In the end，some directions that have yet to be further improved and perfected are discussed.