There is no evidence that moxa smoking is effective in preventing novel coronavirus infections. In addition, moxibustion produces carcinogenic chemicals, including benzene, formaldehyde, and polycyclic aromatic hydrocarbons. In addition, moxa smoking in a closed room may cause carbon monoxide poisoning, which is detrimental to human health. In addition, although Chinese medicine believes that the heat generated by the burning of moxa can play a warming meridian, moving Qi and blood, expelling cold and removing dampness. However, the evidence is still weak as to whether moxibustion can enhance immunity, and there is no scientific evidence to prove that moxibustion can sterilize and destroy viruses.