Moxibustion is a kind of Chinese medicine treatment, which can warm the meridians, disperse cold, and open the channels, and has a good effect on strengthening the body and relieving muscle tension or nerve stress. If the long-term inhalation of moxibustion smoke is small, generally does not cause harm to the body, but if a large number of long-term inhalation of moxibustion smoke, some of the substances in the smoke for the body also has some bad effects, so in the process of moxibustion should pay attention to the time and frequency of grasp. 1, phenols: moxibustion smoke contains phenolic compounds for the body’s cells have a certain toxic effect, can enter the body through the skin, oral mucosa. General inhalation of a small amount of phenolic compounds can be discharged by the body metabolism, but a large number of long-term inhalation, may cause headaches, dizziness, loss of appetite or rash and other chronic toxic symptoms; 2, aldehydes: moxibustion smoke contains aldehydes can cause some stimulation of the human skin mucosa, causing rashes, throat discomfort and other symptoms, and long-term inhalation of aldehydes in moxibustion smoke, may also lead to chronic poisoning 3, tar: there is also a certain amount of tar in the moxibustion smoke, long-term inhalation of large amounts of tar may cause tar to adhere to the blood vessels in the lungs, inducing emboli in the lungs, or stimulate the lungs to cause coughing, breathing difficulties and other uncomfortable symptoms. Generally speaking, if you do moxibustion at intervals and for a short time each time, it will not cause significant damage to your body. If you want to do moxibustion at home, you can buy smokeless moxa strips if you are worried about the harmful effects of long-term inhalation of moxa smoke, but you need to apply them under the guidance of a doctor to avoid local skin burns caused by improper operation.