Scraping mainly has the role and benefits of dredging meridians, activating blood circulation and dissipating blood stasis, clearing heat and fire and removing dampness. 1. dredge: gua sha can dredge the meridians, can alleviate the symptoms of joint or muscle pain caused by the tendons and veins. 2. blood circulation: gua sha has the role of blood circulation, can effectively promote blood circulation, in order to promote the body’s normal metabolism. 3. clearing heat and fire: Gua Sha can promote the skin to eliminate excess heat in the body, in order to achieve the role of clearing heat and fire. 4. Get rid of dampness: Gua Sha can promote the elimination of dampness to reduce the gathering of dampness in the body. Gua Sha is recommended to be operated under the operation of professional Chinese medicine physiotherapist to avoid accidental damage to the skin, such as discomfort, it is recommended to go to the hospital in a timely manner.