Oily ears are seen clinically in the following two conditions: In the first condition, thin earwax, this is a congenital hereditary condition that manifests as a thin discharge from the ear canal. In the second case, some patients have an over-exuberant secretion of sebaceous glands in the ear canal, which secrete a large amount of oil-like material, causing the cerumen to have an oily change. It is generally recommended that patients usually try to eat less greasy food, which can reduce the secretion of oil and grease. If a patient has oily cerumen in the ear, clinical intervention and treatment is required. Because oily cerumen cannot be excreted on its own through the patient’s chewing and movements such as the patient shaking his or her head, intervention and treatment by the clinician is required. It is generally recommended that the patient go to the hospital and have the doctor flush out the oily cerumen with an aspirator or with saline, which is safer and more reliable and can avoid the possibility of infection.