The invention relates to the technical field of vehicle-mounted 360-degree look-around systems, in particular to a method and system for automatically adjusting the illumination effect of a vehicle model, and the method comprises the following steps: obtaining image data around a vehicle in real time; analyzing the image data, and obtaining a light source position and light intensity in the imagedata; calculating to obtain light corresponding to the light source position and the light intensity; and superposing the obtained light rays on the outer side surface and the interior of the car model, and presenting the car model superposed with the light rays in real time. The invention aims to provide the method and the system for automatically adjusting the illumination effect of the car model. By adopting the technical scheme provided by the invention, the technical problem that the display effect of the car model and the vehicle-mounted interior trim of the existing 360-degree look-around system cannot be automatically adjusted according to the actual illumination environment is solved.