The color produced on the back after scraping, depending on each person’s constitution, can generally appear uniformly bright red and purple-dark. But can not rely on scraping color to determine the existence of disease. If there is any physical discomfort timely medical treatment. Gua Sha is generally a traditional Chinese medicine treatment method, according to the theory of Chinese medicine meridian pulse points as a guide, the use of gua sha apparatus and techniques, in the gua sha apparatus dipped in a special medium, in the back surface for repeated scraping, prompting the skin surface to produce dark red bleeding changes. Scraping Gua Sha can play a role in promoting blood circulation, relieve fatigue, blood circulation and stasis (promote blood operation, eliminate blood stasis in the body) effect. But currently there is no objective basis for judging by the color of the back after scraping Gua Sha. It is recommended that if the body is not adapted to timely medical treatment, to avoid affecting the condition, have adverse consequences!