A vehicle headlight device includes optical systems that are respectively provided to light sources, and illuminate ahead of a vehicle by light emitted from the light sources, with light distribution patterns of which illuminating areas are offset to each other at least in vertical directions, a stoppable distance calculator that calculates a stoppable distance of the vehicle, and a light source controller that controls the light sources to be turned on and off so that an area ahead of the vehicle and away from the vehicle by the stoppable distance is illuminated by at least one of the optical systems.