Illumination supplementing device for garden plants

The utility model discloses a garden plant illumination supplementing device which comprises a bottom plate, a sliding rail column is fixedly connected to the upper end face of the bottom plate, a top plate is fixedly connected to the upper end face of the sliding rail column, a pulley is connected to the sliding rail column in a rolling mode, a rotating rod is rotationally connected to the front end face of the pulley, and a fixing plate is fixedly connected to one end of the rotating rod. A motor is arranged on the upper end face of the top plate, a limiting block is fixedly connected to the upper end face of the top plate, a threaded rod is rotationally connected to the middle of the limiting block, a hollow cylinder is fixedly connected to the upper end face of the lifting platform, an anti-skid rod sleeves the hollow cylinder, a shower head is arranged on the hollow cylinder, and a water tank is arranged on the upper end face of the bottom plate. A control device is arranged on the upper end face of the