The development of distributed generation、DC load and electric vehicle that has brought great challenges to the AC power distribution network, and the advantages of DC power distribution network is becoming more and more obvious. In this paper, firstly, the model of electric vehicle charging and discharging station were described and analyzed. Secondly, we established DC power distribution network planning model including electric vehicle charging and discharging station, considering the cost of line extension, distributed power generation cost, electric vehicle charging and discharging station cost, using the adaptive genetic algorithm with a hybrid coding method. The calculation and analysis of different cases verify the superiority and rationality of the planning model.