A vehicle headlight device comprising: a first illuminating unit including a first mirror (22, 42, 44) configured to rotate, the first mirror (22, 42, 44) being configured to reflect laser light that has exited from a laser light source, the first illuminating unit being configured to form the laser light into scanning light, and illuminate the scanning light toward a first illumination region (Ha) that is in front of a vehicle, wherein the first illuminating unit is a high beam unit; a second illuminating unit including a second mirror comprising an aggregate of a plurality of micro mirrors having angles that can be changed, the second mirror being configured to reflect visible light that has exited from a visible light source, form the visible light into information displaying light, and illuminate the information displaying light toward a second illumination region (Da) that is in front of the vehicle; a controlling unit configured to control turning-off and turning-on of the laser light source, rotating operation of the first mirror (22, 42, 44), and changing of the angles of the micro mirrors at the second mirror; a third illuminating unit is configured to illuminate visible light, which has exited from a further visible light source, toward a third illumination region (La) that is further toward the vehicle than the first illumination region (Ha), the third illuminating unit being a low beam unit, wherein a portion of the third illumination region (La), which is to be illuminated by the third illuminating unit, is configured so as to be illuminated by the first illuminating unit so that a cut-off portion (Co) in the third illuminating region (La) is formed by the first illuminating unit, and wherein the first illuminating unit and the second illuminating unit have a common projection lens configured to transmit therethrough the scanning light and illuminate the scanning light toward the first illumination region (Ha), and configured to transmit therethrough the information displaying light and illuminate the information displaying light toward the second illumination region (Da). a first illuminating unit including a first mirror (22, 42, 44) configured to rotate, the first mirror (22, 42, 44) being configured to reflect laser light that has exited from a laser light source, the first illuminating unit being configured to form the laser light into scanning light, and illuminate the scanning light toward a first illumination region (Ha) that is in front of a vehicle, wherein the first illuminating unit is a high beam unit; a second illuminating unit including a second mirror comprising an aggregate of a plurality of micro mirrors having angles that can be changed, the second mirror being configured to reflect visible light that has exited from a visible light source, form the visible light into information displaying light, and illuminate the information displaying light toward a second illumination region (Da) that is in front of the vehicle; a controlling unit configured to control turning-off and turning-on of the laser light source, rotating operation of the first mirror (22, 42, 44), and changing of the angles of the micro mirrors at the second mirror; a third illuminating unit is configured to illuminate visible light, which has exited from a further visible light source, toward a third illumination region (La) that is further toward the vehicle than the first illumination region (Ha), the third illuminating unit being a low beam unit, wherein a portion of the third illumination region (La), which is to be illuminated by the third illuminating unit, is configured so as to be illuminated by the first illuminating unit so that a cut-off portion (Co) in the third illuminating region (La) is formed by the first illuminating unit, and wherein the first illuminating unit and the second illuminating unit have a common projection lens configured to transmit therethrough the scanning light and illuminate the scanning light toward the first illumination region (Ha), and configured to transmit therethrough the information displaying light and illuminate the information displaying light toward the second illumination region (Da).