Moxibustion is an external treatment method to prevent and treat diseases and health care through the heat of moxibustion fire, which is more effective for chronic weak diseases and diseases caused by wind, cold and dampness. In general, as long as the indications for moxibustion are met, and the time of moxibustion is properly adjusted according to medical advice, long-term moxibustion is not significantly harmful. However, some people are allergic to moxa, or due to improper application, may cause fire, burns, etc.: 1, fire: moxibustion is a warm treatment, Yang deficiency, Qi deficiency, prolonged diarrhea, as well as cold limb paralysis, phlegm and other evidence can be applied, but if the control time is not appropriate, excessive moxibustion may cause redness, dry mouth, irritability and other fire performance; 2, burns: moxa ash off or moxa column dumping The moxibustion is made of mugwort, and some people may be allergic to mugwort, which may cause allergic symptoms during moxibustion, such as skin itching, redness and swelling, which may also cause anaphylaxis. It should be noted that the face, precordial area and joints should not be moxibustion with scar, nipples and external genital organs are not suitable for direct moxibustion, patients with heatstroke, hypertensive crisis, advanced tuberculosis with massive hemoptysis are not suitable for moxibustion therapy, and pregnant women are not recommended to moxibustion by themselves to avoid serious adverse effects.