The utility model relates to a solar panel washs reminding device, be used for gathering solar energy photoelectric conversion efficiency and environmental parameter's data acquisition device and be used for managing the data acquisition device and provide the warning management module who washs the warning plan including the multiunit, the data acquisition device includes generated power collection module, sunshine intensity collection module, data processing module, power module and communication module, and communication module and interconnected grid side's warning generated power 0 generated power 1 transmit alternately, remind management module to include number of the account mandate management module, database management module and remind tactful management module, remind tactful management module to include photoelectric conversion efficiency prediction model and recommend washing plan management module. The utility model provides a distributed solar panel power station wash not have the problem of plan, nos foundation, the reasonable tactics that wash are formulated, the promotion cleaning efficiency to factors such as comprehensive reference illumination intensity, ambient temperature, historical conversion efficiency.