Oily ears refer to oily cerumen, which is not a disease and is caused by genetic factors, and is not cured. Oily ears, clinically referred to as oily cerumen, are a normal phenomenon that is usually associated with genetic factors. The secretion of cerumen by ceruminous glands, whether dry or oily, is normal and usually has no effect on health. There is no clinical need for treatment and no way to treat it. Oily cerumen can be cleaned out of the ear regularly to avoid blocking the external ear canal. People with oily ears usually have abnormally high metabolism of ceruminous glands and sebaceous glands in the external auditory canal. When the oily cerumen in the ear canal blocks the external auditory canal due to excess, it will cause the ear to produce the discomfort of being blocked. In this case, it is necessary to remove the cerumen with a cerumen hook, suction, or rinse out with warm saline after soaking with cerumen softening medication. Oily ears are a manifestation of excessive secretion of ceruminous sebaceous glands in the external auditory canal, which is not a disease and is not a cause for concern. It is recommended to clean the ears regularly to prevent excessive cerumen from blocking the external ear canal and affecting hearing.