Hook-type shot blasting machines into a single hook and double hook, hook type shot blasting machine consists of two alternating workpiece loading hook shot blasting into the room. Shot will use 0.2 to 0.8 projectile thrown surface of the workpiece, such that the surface of the workpiece reaches a certain roughness, so that the workpiece to become beautiful, or change the stress of the workpiece and increased life expectancy. This model is widely used in medium and small casting foundry, construction, chemical, electrical and machine tool industries, surface cleaning or strengthening treatment forgings.