Dry earwax and wet earwax are two normal phenomena that are not caused by disease, except that in China dry earwax accounts for the majority of people and wet earwax for a relatively small number of people. The clinical reasons for dry and wet earwax are mainly determined by the following: a. There are a large number of sebaceous glands, cerumen glands and sweat glands in the ear canal, and patients with wet earwax may have more vigorous sweat gland secretion, resulting in the earwax becoming very thin and not easily crusted. In the case of dry earwax, the sweat glands secrete less, so the earwax easily crusts over in clumps and flakes, suggesting that the patient’s congenital genetic factors are related, mainly determined by genes, and it is difficult to change them later through medication and other related treatments. Second, wet earwax should be cleaned regularly in the hospital, because it is difficult to discharge wet earwax by oneself, and if it is not cleaned for a long time, it will easily induce ear canal inflammation.