Scraping is guided by the theory of traditional Chinese medicine meridians and acupoints. Through special scraping instruments and corresponding techniques, a certain medium is taken, repeated scraping and rubbing on the body surface, and red miliary or dark red bleeding spots appear on the skin. "Out of the sputum" changes, in order to achieve the role of blood circulation. Because of its simplicity, convenience, low cost and efficiency, it has a wide range of clinical applications and is suitable for medical and family health care. It can also be used in combination with acupuncture, cupping, puncture and bloodletting to strengthen the effect of promoting blood circulation, removing evil spirits and detoxifying.