The invention relates to the technical field of vehicular parking assist methods, in particular to a parking space displaying assist method and system. The method comprises the steps of when a vehicleis driven by a park, displaying, by a vehicular display screen, an environment top view of a detected vehicle nearby region in real time; detecting empty parking spaces near the vehicle, and markingthe empty parking spaces in the environment top view; calculating azimuth of the vehicle in the environment top view in real time; when the marked empty parking spaces leave the environment top view,displaying at a corner of the vehicular display screen, a parking guide map according to the azimuth. The invention is intended to provide the parking space displaying assist method and system; by using the technical scheme, the technical problem is solved that an existing vehicle with a parking space detection system is unable to normally detect a parking space and cannot display completely.