Sandblasting room, as the name suggests, is a sandblasting operation of the house, also known as shot blasting room, sand room. In order to improve the quality of sandblasting pretreatment of semi-finished sheet workpieces, large heavy parts and special vehicle body, improve the working environment of front-line workers, reduce the labor intensity of workers, reduce the particle emission, reach the air pollution discharge standard, and reduce the noise pollution, an environmental protection sandblasting room for coating pretreatment is designed, which can meet the requirements of mass production Demand, and can meet the requirements of environmental protection industry development, but also better improve the quality of semi-finished coating pretreatment.