Earwax is called cerumen, and greasy earwax is mainly considered to be “oily ear”, which is a normal physiological phenomenon and related to heredity. Most of the earwax is in a relatively dry state, but some people because of genetic factors, cerumen will become more greasy, this is a normal physiological phenomenon, not a pathological factor. If there is any discomfort, it is recommended that the patient go to a regular hospital. The skin of the external auditory canal contains hair follicles, sebaceous glands and ceruminous glands. Due to genetic factors, people with strong sebaceous gland secretion will mix too much oil in the secretion into the cerumen, so the cerumen will show an oily and greasy state, which is clinically known as oily ear, related to heredity but is not a disease, and is normal. However, if the cerumen in the ear is too greasy and blocks the ear canal, it will cause cerumen embolism, resulting in the patient feeling stuffy and blocked in the ear and hearing loss, at this time, you can go to the hospital, and the doctor will take out the cerumen blocked in the ear with professional instruments.