If pain occurs when pressure is applied to the opening of the external ear canal, it is considered to be caused by a boil in the external ear canal or acute otitis externa. Since the skin of the cartilaginous part of the external ear canal is relatively thick and richly distributed with hair follicles, sebaceous glands and cerumen glands, there is a lack of subcutaneous tissue under the skin of the external ear canal and the skin is closely connected to the periosteum. Due to the above anatomical characteristics, those who like to dig their ears can cause damage to the skin of the external ear canal and lead to secondary infection. When the inflammation and swelling of the skin presses on the sensory nerve endings, more intense pain can occur. Do not pull out your ears, and do not let non-professional otolaryngologists remove cerumen from the external ear canal. In mild cases, the skin of the external ear canal can be damaged or infected with fungus; in severe cases, it can lead to damage to the eardrum and cause deafness to occur.