1, the scraping tool is the scraping plate, and the correct use of the scraping plate can play a role in health care and treatment. The scraper has thick surface, thin surface and edges and corners. Scrape the skin with a thin face when treating diseases, with a big face when protecting health, and scrape the skin with corners when acupoints near Tianjie and acupoints are needed. When operating, we should master the three-dimensional orientation, promote eruption, shorten the stimulation time, control the stimulation intensity and reduce the feeling of local pain.

2. Angle refers to the angle formed by the scraper and the skin. When the scraping plate is perpendicular to the skin, it is the most irritating to the skin, and it is easy to scratch and feel pain. When the included angle between the scraping plate and the skin is less than 90, it is not as easy to scratch as it is perpendicular to the skin, and it is not as easy as to scratch vertically. Generally speaking, it is enough to keep an angle of 60.