In response to the problems of reduced grid stability and lack of interaction between charging piles and the power grid caused by the integration of electric vehicles into the grid for charging, this article designs a grid type charging pile system that considers the participation of electric vehicles. Firstly, the overall structure of the grid type charging system was proposed, taking into account the convenience of primary and secondary integration and the reliability of the board, and a universal control board was designed; Established V2G interaction model and VSG control model for electric vehicles; Propose a charging station control strategy consisting of an improved VSG algorithm based on V2G and a two-layer control strategy for the underlying MPC. Finally, through example verification, compared to traditional VSG control algorithms, the total harmonic distortion is reduced from 11.79% to 2.94%, proving that the designed system can improve the stability of electric vehicle integration.