Provided is a vehicle headlight device which can improve overlooking of pedestrians by a drive, even under adverse conditions such as nighttime or rain at night. A vehicle headlight device includes: a pattern photoirradiator (right-side pattern irradiation lamp) which irradiates light on a predetermined irradiation pattern light distribution region of a vehicle in an irradiation pattern in which a bright region and a dark region are alternately repeated; and a cornering light which irradiates a light distribution region under the irradiation pattern light distribution region in a form in which an entire area is a bright region. In this embodiment, the pattern photoirradiator irradiates light synchronously with the cornering light.