The role of Gua Sha on the human body does not have a clear distinction between men and women, Gua Sha has dredge meridians, line gas blood (to promote gas operation so that blood circulation), adjust the function of internal organs and so on. Gua Sha and Gua Sha oil the same place, its Chinese medicine meridian skin theory as the basis, through the index finger, the middle finger bend clamp skin, to appropriate strength pull some parts of the body surface to prevent and cure diseases, its mechanism is through the twelve skin benign stimulation, through the meridian conduction, to achieve the purpose of the treatment of the outside to adjust the internal. Such as the throat localized Gua Sha, can pass through the meridian, scattered evil poison, improve the sore throat, cough and other symptoms, pulling the large vertebrae can be wind relief, clearing heat through the sun, reduce the external sensation of head stuffy and other uncomfortable symptoms. Gua Sha can not be used blindly, need to be carried out under the guidance of a doctor.