Vehicle Headlamp system, control device, vehicle headlamp, and control method of vehicle headlamp

A vehicle lamp system (200) comprising: a vehicle lamp capable of forming a light distribution pattern which has an irradiation region on an opposite lane side above a horizontal line (H); and a controller controlling the vehicle lamp, wherein the controller (228L,228R) avoids formation of the light distribution pattern when a shading body (410) is present along a road between a subject vehicle and an opposite lane.