A driver monitor device includes: multiple light sources for irradiating light toward a driver seat respectively； a shooting unit arranged at a position from which the shooting unit shoots a driver sitting on the driver seat； a driver detection unit detecting a position of a face or an eye of the driver based on information in an image shot by the shooting unit； a light source specifying unit specifying one of the light sources which irradiates an area of the face or the eye of the driver, according to a detection result of the driver detection unit； and a light source control unit controlling the light sources to turn on the one of the light sources specified by the light source specifying unit, and to turn off or dim another light source.
