The steel strip is delivered to the clamping device by manual uncoiling, and then it passes through the shot blasting cleaning room to the winding. The high-efficiency cantilever centrifugal shot blaster is used to eject the projectile onto the surface of the cleaned workpiece at high speed, and the workpiece is impacted and scraped to remove rust, oxide and other dirt on the workpiece surface. Then the worker is removed by brush and high-pressure blow pipe. The float and sink on the surface of the workpiece are swept clean so as to improve the corrosion resistance and fatigue resistance of the steel strip, prolong its service life and optimize the surface technological condition of the steel strip. The machine can be used independently or wiring.