If the patient has pain in the ear, there are 3 main problems: 1. Inflammation, most likely due to the patient often digging his ears or getting dirty water in his ears when washing his hair or bathing, resulting in the formation of acute otitis externa or acute otitis media. 2. Trauma is the main consideration, the patient is likely to have been hit by external forces, resulting in pain in the ear. It is best to go to the hospital to improve the CT of the middle ear to clarify the specific situation in the ear canal, and if there is any problem, it must be actively treated. 3. Consider swelling, such as a cholesteatoma or a boil in the external ear canal, or even the formation of ear canal cancer, so it is necessary to go to the hospital for detailed examination and laboratory tests to clarify the situation before further treatment.