Pain at the entrance of the ear is considered to be caused by excessive force of ear digging, boils, sebaceous cysts and other diseases. 1. The patient digs the ear with excessive force, causing damage to the skin of the ear canal and causing pain. 2. Boil: Boil is a purulent inflammation of the hair follicle and its deep surrounding tissues, mainly caused by Staphylococcus aureus infection, which can occur in any part of the body, preferably on the head and face, such as the ear, and will lead to local redness, swelling, pain and other symptoms. 3. Sebaceous cysts: Sebaceous cysts are benign skin lesions in which sebum gradually accumulates to form cysts, which are commonly found on the head, face, back and buttocks, etc. Small cysts usually have no obvious symptoms, while large cysts will compress the surrounding tissues and cause discomfort. If secondary infection occurs, local redness, swelling, pain and other symptoms. There are many reasons for the pain at the entrance of the ear, and it is recommended to consult a doctor in time to clarify the cause and give targeted treatment.