The invention relates to an electromobile power exchanging station site selection method, which is used for selecting sites for an electromobile power exchanging station and solves the problems of difficulty in site selection and planning of the electromobile power exchanging station. The power exchanging station site selection method gives consideration to both benefit of power station operating companies and power exchangers, leads the minimum total cost of the power station operating companies and the power exchangers to be the target function, considers traffic convenience, timeliness and power exchanging station total capacity constraint, adds constraint of hard time windows on power exchanger travelling and power exchanging total time, and selects sites for the electromobile power exchanging station. The method considers different considerations of benefit of both sides in different planning stages with the minimum total cost of the power station operating companies and the power exchangers as the target function, and selects sites for the electromobile power exchanging station in different planning stages by changing benefit weight of the power station operating companies and the power exchangers. The constraint of the hard time windows includes traveling time of a driver reaching a goal power exchanging station, queuing time and power exchanging time.