Abstract: The application of V2 G technology to microgrid can not only improve the operation efficiency of the microgrid,but also create profits for electric vehicle（EV）users. For this reason,the paper proposes the optimal operation planning strategy for the microgrid with V2 G technology. Firstly,the energy balance models and constraints of equipments in the microgrid are established. Then,considering EV aggregators and microgrid operators as independent entity and integration respectively,different objective functions for the microgrid operation optimization are established,and sequential quadratic programming algorithm is used to search the minimum daily operation cost of the microgrid. Finally,the simulation test is carried out for both residential and commercial users. The results show that making full use of V2 G technology can improve the operation efficiency of the microgrid energy and reduce the total cost of the microgrid.