The invention relates to a new energy power generation direct-current power distribution technology and aims to provide a distributed control method for a multi-voltage level direct-current distribution network with a distributed power supply accessed, wherein an interconnection between high and low voltage direct-current buses is realized, and voltage level conversion and isolation between the high and low voltage direct currents are realized by using a direct current transformer. Through the droop control of the distributed power supply and the constant ratio control of the direct current transformer between the high and low voltage direct currents, energy seamless flow in the entire direct current distribution network region is realized without switching a control mode. When working inthe master-slave control mode, only one voltage support source is needed on one side to achieve voltage consistency in the entire distribution network region, and the power flow and control mode change in the entire high-low voltage direct-current distribution network region do not need to change the control mode of the direct-current transformer, so as to realize integrated control of the multi-voltage level or multi-region direct-current distribution network, thereby greatly reducing the control difficulty of the direct-current distribution network.