The source of Gua Sha therapy is closely related to and evolved from acupuncture, cupping, tui na, acupuncture, and blood cutting. The most common cause of gua sha is the illnesses that occur during the summer and autumn seasons due to the feeling of wind, cold, summer, humidity, dryness and fire. The actual “Gua Gua” is the term used by modern Chinese medicine to refer to the “Gua Xiang”, which is a congested change in the skin of the corresponding area after scraping treatment, such as red corn-like, flushed, purplish red or dark red blood spots, blood bubbles, etc. The term “stasis” in Chinese medicine is used. The actual “bruises” are also called “gua sha”, which means that the blood is not flowing smoothly, or the blood is away from the meridians, or the blood itself is dirty and unclean, and the long term illness is into the complex. It is also a great way to clear the meridians, promote qi and blood, invigorate the blood and remove stasis, regulate the internal organs and balance yin and yang. Jing Yue Quan Shu typhoid wind” said “light and shallow evil:, stop offending the skin and hair, that is, typhoid wind. The skin and hair for the lung together, and up to the nose” can be seen six evil from the mouth and nose or skin and hair into the lungs, resulting in the lung gas is not pronounced, outside the bladder meridians are blocked, appear on the symptoms.” Wind is the longest of all diseases, and psoriasis is mostly thought to be related to “wind” and “blood”, mostly caused by wind-damp-heat evil attacking the skin or heat accumulating in the intestines and stomach, which affects the skin and hair externally. Based on years of clinical summary and communication with patients, the author believes that the three evils of wind, cold and damp are the main pathogenic factors. It is caused by the wind, cold and damp three evils paralyzing the meridians, the Qi and blood is not smooth, and the skin is not moistened. The treatment is to remove wind and dampness as its main method. The long-standing disease enters the luo, and blood heat stays for a long time, resulting in “the blood is tormented by heat and becomes a lump” (Wang Qingren, “Medical Lin Correction”), so that the blood does not flow smoothly, and the stagnant heat does not transform into a bruised blood disease. Capillaroscopic observation of psoriasis lesions reveals local capillary hyperplasia and expansion, distortion into clusters, slowed blood flow, increased vascular permeability, obvious exudation of surrounding tissues, and impaired microcirculation. This is consistent with Chinese medicine blood heat causes local congestion, and blood dryness causes high blood viscosity and slow blood flow leading to blood stasis. In addition to dispelling wind, cold, summer heat, dampness, dryness and fire, Gua Sha can also regulate blood and Qi, unblock meridians, activate blood circulation and remove blood stasis to promote blood circulation and metabolism in the diseased area, so that the diseased organs and cells can be replenished with nutrients and oxygen and become activated, thus achieving the purpose of helping to remove evil and cure the disease. Chloasma is caused by Qi stagnation and blood stasis, and liver and kidney dysfunction. Qing? Wang Qingren considered this disease as “blood stasis evidence”. The main part of the scraping is in the twelve skin parts. The actual fact is that you can find a lot of people who have been in the business for a long time.