A parking assist method for assisting parking of a subject vehicle uses a parking assist apparatus comprising a controller that guides the subject vehicle to a parking space and a display that displays the parking space. The parking assist method comprises: specifying an available parking space into which the subject vehicle can be parked; displaying the available parking space on the display; when the available parking space is in a parking-unavailable state that represents a state in which the subject vehicle cannot be parked into the available parking space, determining whether or not the parking-unavailable state is canceled; and when the parking-unavailable state is canceled before a first time passes, maintaining a display form of the available parking space on the display.