Manual scraping is one of the methods of plane finishing, which aims to reduce the roughness value of the surface, improve the contact accuracy and geometric accuracy, and thus improve the overall matching stiffness, lubrication performance, mechanical benefits and service life of the machine tool. It is difficult to achieve the effect if only surface grinder and guideway grinder are used for machining. Manual scraping is a necessary processing technology for high-grade machine tools and cast iron flat plates.Scraping is a combination of scraping and grinding.