Abstract: In response to the safety and economic operation issues of the power grid caused by disorderly charging of electric vehicles, this paper develops a new type of interactive control system for the load of electric vehicle charging and swapping piles and its application method, which achieves real-time collection of information such as operating status data and electricity data of electric vehicle charging piles. Combined with the load prediction of substation distribution transformers, the charging demand of substation electric vehicles, and the power limit of substation distribution transformers are the three main factors, Develop a charging management and control strategy for electric vehicles within the station area. By orderly charging control, guiding users to use energy reasonably, guiding the charging load of electric vehicles to non grid peak hours for charging, reducing users' charging costs, and effectively improving the ability of the grid to connect to charging facilities.