The need to remove earwax needs to be judged on a case-by-case basis. If the cerumen is present in the external ear canal and is not affecting hearing or causing other problems, it is recommended that it not be removed. If the cerumen is already blocked or embolized, in this case it needs to be removed. In addition, if the cerumen is stuck to the eardrum and the patient experiences a strange sound when moving the head, the cerumen also needs to be removed. Cerumen is a normal secretion from the cerumen glands of the external ear canal and has a protective effect on the skin of the external ear canal, while dust can also adhere to the cerumen glands. Sometimes cerumen can also have a protective effect on hearing, such as loud stimulation.