Newborns have a small hole in the ear, consider congenital preauricular fistula, is caused by heredity, if there is an infection should be treated promptly. Congenital preauricular fistula belongs to a congenital ear deformity, for autosomal hereditary disease, can be unilateral or bilateral outer ear skin on the blind end of the tube, fistula is often narrow, shallow and shallow, and sometimes can be squeezed out of the cheese-like secretion or white viscous material. Normally asymptomatic, if secondary infection, will form abscess in the local, with redness, swelling, heat and pain. Newborns with preauricular fistula in the ear, no history of infection can be left untreated, but parents pay attention to avoid frequent squeezing or poking small holes, and to prevent water from entering them, in order to prevent infection. In case of infection, prompt medical attention is recommended to determine the appropriate treatment according to the progress of the disease.