There is a small hole in the ear may be preauricular fistula, under normal circumstances the ear should not exist small holes, part of the population due to the influence of genetic factors or embryonic period of developmental anomalies, etc., resulting in small holes in the ear as well as the deep sinus tract did not close completely, and left for the preauricular fistula, a common congenital malformation. During the embryonic development of the ear, there is a sinus tract in front of the ear that can communicate with the throat and cheeks, but with the development of the embryo, the sinus tract can gradually disappear. However, part of the population at birth in front of the ear left a small hole, small hole in the depth of the existence of the sinus tract, but generally not particularly deep, can be unilateral, can also be both sides of the ear. Fistula in front of the ear without infection, can be temporarily not dealt with, the auricle and ear function will not affect, if the small hole site into the unclean water or other pollutants, so that the deep sinus mucosa inflammation, accumulation in the sinus tract caused by localized infections, the appearance of local redness and swelling, and even abscess formation, need abscess incision and drainage, at the same time, to change the medication on a regular basis, oral amoxicillin, cefuroxime, and other medications. Patients with a small hole in the ear are advised to usually keep the local dry, when discomfort occurs, go to the hospital in time for consultation, according to the doctor’s guidance for standardized treatment.