There are various reasons for patients’ ear odor, mainly including the following: First, there are foreign bodies inside the patient’s ears. Children stuff small toys into their ears while playing, and the odor will appear after a long time. The second type is that the patient has a lot of cerumen in the ear, which can sometimes become infected when water enters the ear, causing the patient’s ear to stink. The third, mainly consider that the patient has inflammation inside the ear, such as otitis externa or otitis media, because there is inflammatory exudation, often there will be a lot of white secretions like bean curd often very smelly. The fourth one is the formation of cholesteatoma in the ear canal. Cholesteatoma is a benign swelling, but it can destroy the mucous membrane and bones of the ear canal and even invade the cranium of the patient, so it must be taken seriously. Regardless of which of the above causes is responsible for the patient’s odor, it needs to be actively dealt with.