To reduce a time for settling a washing fee by utilizing a parking fee settling device for settling the washing fee as well during settling a parking fee.

This parking fee settling method for a vehicle parked in a given parking space comprises utilizing the parking fee settling device having a calculation part for calculating the parking fee, a parking fee display part, a fee charge part and a parking fee settling part for receiving the input of a washing request for the vehicle parked in the given parking space, displaying the parking fee and the washing fee on the display part when the input of the washing fee is determined, and settling the parking fee and the washing fee using the settling part when the fees are charged from the charge part.