Moxibustion is better with smoke from the moxa effect, and moxibustion is better without smoke from the moxa environment. The smoke of moxibustion contains volatile oil, which also contains the active ingredients of moxa leaves and can make the heat more lasting, but it will make the skin yellow patients with moxa odor, as well as cause moxibustion in the place of air turbidity, not conducive to breathing. Smokeless moxa is the moxa charcoal formed after burning moxa once, the active ingredients and heat is not as strong as smoky moxa, but there is no smoke flavor during moxibustion, which avoids respiratory irritation and does not make the skin yellow. It is recommended that patients who are looking for results can choose smoky moxa, and patients who have respiratory diseases or are sensitive to the smell of smoke can choose smokeless moxa.