Scraping techniques have light scraping method, heavy scraping method, slow scraping method, fast scraping method. 1. light scraping method: scraping gua sha board to a large area of contact with the skin, moving slowly, downward pressure scraping power to small. 2. heavy scraping method: scraping when scraping gua sha board to small area of contact with the skin, moving speed to fast, downward pressure scraping power to be big, but to be scraped within the scope of the person can withstand. 3. slow scraping method: the number of scrapes per minute should not be more than 30 times, heavy and slow scraping, mostly used for physically weak people. Power light and slow scraping, mostly used for weak or facial health care people. 4. fast scraping method: each minute scraping the number of gua sha should not be less than 30 times, which the power to heavy and fast scraping, mostly used for physically strong people. The power is light and fast scraping, mostly used for strong or overall health care people. Scraping needs to be carried out under the guidance of professionals or by a doctor.