Long-term inhalation of large quantities of moxibustion smoke has the following disadvantages: it may lead to chronic poisoning, lung disease and so on. 1. chronic poisoning: moxibustion smoke contains a large number of phenols, aldehydes and other compounds and respirable particles, can enter the body through the oral mucosa, skin, etc., the body cells have a toxic effect, long-term inhalation of moxibustion smoke can appear dizziness, headache, nausea, vomiting and other chronic poisoning symptoms. 2. Lung disease: moxibustion smoke contains tar, long-term inhalation of moxibustion smoke can lead to pulmonary vascular adherence to tar, thereby stimulating the lungs to cough and other symptoms, in the long run, may induce or aggravate asthma and other lung diseases. If you need moxibustion, it is recommended to do moxibustion at intervals, and you should go to the hospital and use the correct method of moxibustion under the guidance of your doctor.