Has the effects of dredging channels and collaterals, regulating qi and blood, balancing yin and yang, promoting blood circulation, removing blood stasis, relieving swelling and pain, expelling wind and dampness, dispelling cold, and strengthening body. Through the negative pressure in the tank, local superficial tissues are passively congested, local blood vessels are dilated, blood flow is increased, and blood circulation is accelerated, thereby improving the blood supply of skin, enhancing the vitality of deep skin cells, enhancing the permeability of blood vessel walls and the phagocytosis of blood cells, raising local temperature, enhancing local tolerance and body resistance, improving immunity, and promoting the improvement of diseases. Disadvantages, try not to pull out the leaking part, which will affect the appearance. Note that cupping is not suitable for pregnant women, women's menstrual period, active tuberculosis, insanity, insanity, fidgeting and muscle spasms. Patients with hypertension, moderate and severe heart disease, heart failure and respiratory failure should not be cupped. Cupping is not suitable for people who are drunk, overeating, overworked, thirsty, extremely tired after strenuous exercise, cachexia and inelastic skin. There are hemophilia, leukemia, pernicious anemia, thrombocytopenia and other blood diseases, and cupping is absolutely forbidden. Cupping is not suitable for skin allergies, ulcers and edema. Course of treatment; Five days for children. Adults take seven days as a course of treatment. Every three days, continue the next course of treatment. After cupping, adults stay for 10 minute, children for about 3 minutes, girls for about 5 minutes and women for about 7 minutes. You can choose Beijing Kangzhu cupping device, which is safer and sold in pharmacies. You can adjust the stress according to your tolerance.