At present, when the marking of high-pressure water blasting machineis cleared, because some operations also have higher and higher environmental protection requirements, the high-pressure water jet marking removal method has emerged at the historic moment, and has become a type of marking that European and American countries have favored in recent years. Cleaning method, the main construction machinery is high-pressure water jet marking machine. The washing machine uses a pressurized system to make water ejected from the nozzle. This water jet has a strong impact and cutting force, which can be directly penetrated into the pores of the asphalt to remove the marking paint. The cleaned pavement is not only cleaned by the high-pressure water jet removal method, there is any residue of the marking paint, and there will be no damage, and the entire pavement will become very clean. The ordinary small high-pressure water jet cleaning machine will generate a large amount of waste water during the cleaning operation. These waters may cause unsanitary pavement or penetrate into the pores of the asphalt to cause damage to the pavement materials. Therefore, the cleaning process should be equipped with appropriate Cleaning equipment. At present, the design of high-pressure water jet cleaning machines abroad is relatively sophisticated and fully equipped. For example, there is a cleaning device at the nozzle of the high-pressure water gun, so it will not affect the road environment. The system pressure can also be adjusted to achieve different Marking paint cleaning.