Scraping the back scraping Gua Sha usually can play the effect of removing dampness. Scraping Gua Sha has the regulating qi line blood, blood circulation, Shu tendons and collaterals, drive away evil and detoxification effects, the human body back mainly distributed is the bladder meridian, bladder meridian is more gas more blood meridian. In addition to the back scraping Gua Sha’s own role in removing dampness can also be adjusted through the bladder meridian of the gas and blood run, so that the gas line water dampness also line to achieve the purpose of removing dampness. Scraping Gua Sha need to pay attention to bleeding tendency, skin highly allergic, extremely weak, serious heart failure patients should be prohibited to scrape or careful scraping. And it has a strict direction, time, techniques, strength requirements. Scraping back scraping Gua Sha need to be operated by a professional doctor, should not be operated at home by yourself, so as to avoid adverse consequences.