The invention relates to a double-layer fast switching method based on motion prediction in V2I communication, which comprises the following steps of: establishing a database in each access point; after a vehicle is accessed, sending the identifier and the motion information of the vehicle to the current access point, and calculating the distance between each access point in the database and the vehicle and pre-switching trigger time; after reaching the pre-switching trigger time, recalculating the distance between each access point in the database and the current vehicle, choosing one accesspoint with decreased distance to the vehicle as a possible access point (AP) for next jump, and performing pre-authentication; and directly associating again after the vehicle is accessed into a new AP so as to perform fast double-layer switching. The method is convenient for system realization, can efficiently lower switching delay and packet loss rate, can reduce signaling cost and can be simultaneously applicable to the occasions of cell continuous coverage and cell non-continuous coverage.