The utility model discloses a solar automatic cleaning device, comprising a solar panel and a solar base frame. A cleaning mechanism is mounted on the solar base frame and located above the solar panel. The cleaning mechanism comprises a cleaning brush. While the cleaning mechanism moves above the solar panel, the cleaning brush performs rotary movements to realize the cleaning of the solar panel. According to the solar automatic cleaning device of the utility model, the structure is simple; the cleaning is completed automatically; the labor intensity is low; and the efficiency is improved obviously.