The purpose of this research was to change the problem of large quantification errors of the detected electric energy in the conventional technology and easy failure of AC charging piles. The method adopted was to design an AC charging pile error verification method with image recognition and constructed a new type of AC charging pile Error verification device, through the sudden change amount of the image difference, the electrical power change of the checked charging pile was detected, the residual selection similarity algorithm was used to compare the difference T(n) between the two frames, and the difference between the current frame f(n) and the previous frame f(n-1)was calculated. Value and the change of the graphic difference value between the previous frame f(n-1) and the previous frame f(n-2)was also calculated. The result was that through the above design, the verification error of the AC charging pile was reduced, and the average error was less than 5%. Therefore, the scheme of this study improved the verification accuracy.