Abstract: Under the "double high" and "double peak" characteristics of the power grid and the "dual carbon" goal, the application of V2G technology (Vehicle to Grid) can provide the power grid with diversified auxiliary services and smooth the fluctuation of new energy, promote energy clean and low-carbon transition. With the continuous expansion of the V2G pilot scale, the upgrading and transformation of related terminal equipment and system platforms has a large number of tasks and high costs. It is urgent to study and improve V2G standard system, and to standardize the design of the information and energy interaction interface between the vehicle, charging pile and grid. Firstly, the development and revision of relevant foreign standardization organizations and V2G standards are analyzed, and the IEC technical committees, working groups, and standards correspondence are summarized. Secondly, the current status of domestic V2G standardization in terms of vehicles, charging piles, and grid are analyzed. Finally, the advantages and disadvantages between domestic and foreign standards are analyzed, combined with the development trend of industry and technology, Chinese V2G standard system design recommendations are presented.