The appearance of bruising on the skin after cupping is considered by modern medicine to be the result of the negative pressure of cupping, which causes the local capillaries to break down and a large amount of blood clotting to appear as black and bruising. In traditional Chinese medicine, cupping is considered to be an invasion of wind, cold and dampness, and local stagnation of qi and blood, which can be discharged through cupping and gua sha, which can loosen the local tissues and organs and open up the meridians, which has a very good prognosis for the disease. The effect of cupping on the body’s immune system is very significant, however, attention should be paid to the number and timing of cupping. However, attention should be paid to the frequency and duration of cupping. Once a week is the best, as too frequent cupping can easily cause excessive relaxation of the muscle tissue under the skin, and associated muscle strain and premature muscle damage.