In recent years, China has been developing rapidly in the field of electric vehicles, but when a large number of electric vehiclesare connected to the power grid, it will pose a challenge to the stability and reliability of the power grid. V2G technology can balance thepeak-to-valley difference of the grid and promote the consumption of new energy, improve the flexibility of the grid, and thus effectively al?leviate the problems caused by the uncontrolled access of a large number of electric vehicles to the grid. Taking the EV-elocity project inthe UK as a case study, the environmental value, battery aging and user feedback of the V2G project are analyzed in depth, which are alsoissues that have received relatively little attention in carrying out the V2G project in China at present. In addition, the implementation ofV2G projects in China is also briefly introduced, and the problems faced by V2G research in China at the level of project development andresearch direction are pointed out. Finally, relevant suggestions are made with respect to environmental value, battery aging, user experi?ence and acceptance, which are aimed at narrowing the gap with developed countries in the field of this technology so as to promote the de?velopment of V2G projects and the application of V2G technology in China.