A small hole in the ear is most likely a congenital preauricular fistula, which normally should not have a hole and should be closed, but due to growth and development problems, the fistula does not close, so a small hole will form on the surface of the ear. Sometimes it is in the ear canal, sometimes it is behind the ear, but in most cases it is located at the foot of the ear wheel. Under normal circumstances there will be no obvious inflammation or infection. If the patient often touches and presses it with his hands, it is especially easy for white secretions to form, which can easily become infected over time, leading to redness and swelling in front of the ear, even accompanied by fever. Patients are advised to actively reduce inflammation by routinely disinfecting the surface with iodophor, followed by the application of Bactrim cream. If necessary, surgical solutions are available. Patients are advised to make sure that the area around the small hole is clean.