The application relates to a lighting device that is convenient for adjusting the illumination range, and relates to the field of lamps, which includes a lampshade, a light bulb fixedly connected to the lampshade, an inner gear rotatably connected to the lampshade, and a mounting seat fixedly connected to the lampshade , a gear set on the mounting seat, the gear set includes a first gear rotatably connected to the mounting seat and a second gear rotatably connected to the mounting seat, the number of gear sets is two, and the two gear sets are about the inner teeth The axis of the ring is symmetrical in the center, the first gear and the second gear are fixedly connected with an adjusting rod, the adjusting rod is provided with a first light shield, the first gear meshes with the inner gear ring, the first gear meshes with the second gear, and the first gear meshes with the second gear. The second gear is not meshed with the inner gear, one end of the first shading sheet is fixedly connected to the inner wall of the lampshade, the other end is fixedly connected to the adjusting rod, and the first shading sheet is folded and arranged. The present application has the effect of adjusting the illumination range of the lamp.