Chinese medicine think just after the bath skin coupling (pores) in the open state, this time easy to feel the external evil invasion, so do not recommend just after the bath patients for gua sha. Scraping Gua Sha belongs to the Chinese medicine physical therapy techniques of a kind, mainly through different material tools such as horn, stone, etc., to scrape the oil as lubricating medium, in the corresponding parts of the surface of the body to scrape the method. Scraping Gua Sha has the role of dredging meridians, activating blood circulation and removing blood stasis, and when using it, it should be noted that patients with broken local skin and infections should not use Gua Sha therapy. Just after the bath patients, due to the gas and blood full, the skin coupling is in the open state, this time the external evil is easy to invade the organism and disease, so do not recommend that the patients after the bath scraping Gua Sha. If you need to use gua sha therapy patients, it is recommended to go to the regular hospital, in the professional physician under the guidance of evidence.