Traditional car wash shops are formed by connecting a high-pressure water gun to tap water, adding a few large towels, and some detergent. This is the main equipment of many car wash shops. The phenomenon of water waste in car washing is serious, and the circulating water car washing equipment in the car washing room has become a decoration. A large amount of clean water is secretly used for car washing, and water-saving applications cannot be promoted. According to relevant statistics, according to this washing method, the country will consume 100 million tons annually.