Electric solar panel cleaning brush with a 150-300rpm rotating brush head designed to remove stubborn stains from solar panels, store signs, and billboards, increasing work efficiency by up to 90% and reducing manpower needs. Features a water outlet for switching between dry and wet cleaning modes; dry mode is ideal for quick decontamination, while water washing mode provides deep cleaning for every corner. Constructed with durable nylon bristles and an aluminum alloy rod for excellent durability and deformation resistance, with a widened brush design that enhances cleaning efficiency and modern aesthetics. Includes a telescopic pole made of aluminum alloy with adjustable lengths for cleaning varying heights, and a nylon wire brush head with a 60cm cleaning width for hard-to-reach objects. Lightweight design suitable for distributed factory roofs, mountain solar power plants, fishpond photovoltaic power plants, high-pile photovoltaic power plants, and other work environments, minimizing cleaning inconvenience and noise.