To provide an auto lighting system that performs lighting control corresponding to the driver's visual perception.

This auto lighting system 1 includes an imaging means 2 imaging the road ahead of one's own vehicle, and a lighting control means 3 turning on or off the lights such as headlights based on an image of the road ahead of the one's own vehicle imaged by its imaging means 2. Brightness ahead of the one's own vehicle as perceived by a driver is recognized based on the image of the road ahead of the one's own vehicle imaged by the imaging means 2, and the lighting control in which the lights 101 are turned on or off is performed based on the brightness ahead of its one's own vehicle.