Network ranking variation algorithm constructs a pile car network based on the charging transaction flow data,and uses the voting wisdom of the complex network rather than traditional physical experiments to gain confidence in the value.The algorithm calculates the influence of qualified charging piles on the ranking change of other charging piles in the pile car network.This effect is mediated by electric vehicles.The combination of charging piles and electric vehicles forms an information network,and the change in final ranking reflects the spread range of measurement credibility.