A vehicle lighting device is provided, and includes a mount member, a semiconductor-type light source, a reflector, and screws. Mounting boss portions in which the screws are to be threaded are provided at the mount member. At the reflector, through holes into which the screws are to be inserted are provided for the mounting boss portions. A hollow axle portion, which rotatably engages with one of the mounting boss portions from the outside, is provided at an edge of one of the through holes of the reflector. As a result, this vehicle lighting device allows the reflector to be mounted on the mount member having the semiconductor-type light source mounted thereon, without the semiconductor-type light source and the reflector interfering with each other.