Aiming at the problem that large-scale electric vehicle access has adverse effects on the economic operation of microgrids, an orderly charging and discharging control method for electric vehicles based on peak-valley time-of-use electricity prices is proposed. The transmission closure method is used to divide the peak and valley electricity price periods, and taking into account the user's responsiveness, the impact of different charging and discharging behaviors of car owners on the load of the microgrid is analyzed, and an electric vehicle that increases the revenue of the microgrid under the premise of ensuring the stability of the microgrid The mathematical model of optimal scheduling for orderly charging and discharging, and the improved gray wolf algorithm using chaos theory to solve the problem. Through simulation, it is proved that the proposed strategy can reasonably allocate the charging period of electric vehicles, encourage users to participate in the electricity price response, increase the revenue of the microgrid, and realize the coordinated operation of electric vehicles and microgrid.