Gua Sha is through the positive pressure of the Gua Sha board, acting on the surface of the human body corresponding acupoints, so as to achieve the role of dredging meridians, blood circulation and blood stasis, regulating internal organs. Appropriate scraping, for the human body health care, has a very good role. But not too much, there are the following aspects of the reason: 1, scraping is a damage to the skin, if often scraping, excessive will cause extracutaneous tissue damage, then not only can not play a role in health care, will also cause the body’s burden. 2, scraping is a kind of diarrhea, for the weak, often scraping is easy to lead to the generation of qi deficiency.