Laser Layered Manufacturing is a Rapid Prototyping (RP) technology. RP is an advanced digital manufacturing technology with high flexibility, adaptability and speed. It is directly driven by CAD-model and rich in material selection. Since the late 1980s, RP has become one of the most important modern manufacturing technologies. Laser Layered Manufacturing technology includes the,SLS technology has been widely applied in the development of automobile parts and racing car parts manufacture. These applications include car dashboard, power protective, trimming, water tank, light fittings, tubing, oil pipe, intake pipeline, intake manifold and other parts.