The correct technique of scraping Gua Sha is mainly carried out with the principles of first head and face then hands and feet, from top to bottom, and strength from light to heavy. The correct technique of gua sha can be described mainly from the order, direction, strength three aspects. 1. order: when scraping gua sha, generally according to the first head and face after hands and feet, first waist behind the chest and abdomen, first upper limbs after the lower limbs of the order, step by step operation. 2. direction: generally according to from top to bottom, from inside to outside single direction scraping, and as far as possible long distance. For lower extremity varicose veins or lower extremity swelling, can be used from the bottom upward reverse scraping method. 3. strength: scraping Gua Sha should be even, strength from light to heavy, to the extent that the patient can bear. According to the patient physique and scraping parts, should choose different scraping power. Among them, children, old and frail patients, and facial scraping, the force should be light; physically strong patients, or both sides of the spine, lower limbs and other muscle more plentiful parts of the scraping, the force is heavy. In addition, it should be noted that skin disease or local skin broken patients should not be scraped. If necessary, it is recommended to go to a regular hospital, in the professional physician to identify the guidance of the treatment.