The utility model relates to a power facility warning board comprising a mark board, a base and a warning sticker, wherein the mark board and the base are connected into a whole. The power facility warning board is characterized in that the mark board and the base are made of nonmetallic composite material, and the inner parts thereof are both provided with reinforced steel bars; the mark board and the base are externally provided with frame edges; the two sides of the mark board are marked with the warning sticker and a schematic diagram of a power facility protecting area; the surfaces of the mark board and the base are coated with white reflecting material; and the surfaces of the schematic diagram of the power facility protecting area and the warning sticker are provided with energy storage light-emitting material. A whole warning board has light weight, high strength, low cost, no reuse value, long service life and obvious warning function, and is difficult to steal and lose, and can effectively prevent and reduce power grid accidents.