Abstract: EV charging load prediction technology and V2G technology can effectively reduce the impact of accessed large-scale EV on power grid,realize the rational layout of charging piles ＆ efficient utilization,peak shaving and valley filling of power grid energy. By comparing the advantages and disadvantages of traditional and modern EV load prediction methods,the research progress of V2G is analyzed,and the application examples of EV and power grid interaction at home and abroad are introduced. Finally,the problems that need to be solved when entering the power grid are summarized and prospected,and several possible research approaches are proposed.