The invention discloses an electromobile charging method and system and belongs to the field of automobile charging. The method comprises the steps that an automobile to be charged receives the identification, the position information, the traveling speed, the direction and the electric energy information of a power supplying automobile sent by a base station; the automobile to be charged sends a charging request to the power supplying automobile according to the identification of the power supplying automobile, wherein the identification, the destination and the navigation path of the automobile to be charged are contained in the charging request; the power supplying automobile generates agreement information according to the destination and the navigation path of the automobile to be charged and sends the agreement information to the automobile to be charged; the automobile to be charged determines the meeting place of the power supplying automobile and the automobile to be charged according to the position information, the traveling speed and the direction of the power supplying automobile and sends the meeting place to the power supplying automobile; the automobile to be charged acquires electric energy from the power supplying automobile so as to be charged according to the electric energy information of the power supplying automobile after the two automobiles arrive at the meeting place. The electromobile charging method and system improve the charging efficiency of the automobile to be charged.