In our daily life, we often see some people with a small eye in front of one or both ears, which is often called “hamartomatous eye”, and medically we call it preauricular fistula. Most people don’t feel anything, a few people press the small eyelet there is a small amount of white, foul-smelling secretion out, and sometimes it can be itchy. There are also some people will be secondary infection, local redness, swelling, hot pain, pus, and repeated episodes of scar formation, affecting the aesthetic. So how does a fistula form in front of the ear? This is due to the development of the first and second gill arches in the embryonic developmental period, the development of the auricle of the first and second gill arches of the auricle protoplasm in the developmental process of fusion is incomplete. Domestic sample survey shows that its incidence of 1.2%, can be one-sided or bilateral, unilateral more than bilateral, male and female incidence ratio of about 4:1. this congenital disease has a clear genetic predisposition, it usually occurs alone, but also sometimes with cleft palate, paralabial auricle, auricular hypoplasia, hereditary deafness and other congenital anomalies occur at the same time. Preauricular fistulas are usually blind tubes that vary in depth, length, and branching, with some long fistulas penetrating deep into the external auditory canal, even behind the ear. This fistula is lined with epithelial tissue that secretes sebaceous glands. This is why we find secretions coming out of the ear fistula opening. Pre-auricular fistulas mostly open in front of the ear, and some can also open at the opening of the external auditory canal, the auricular cavity, and the earlobe. No treatment is needed for asymptomatic preauricular fistulas, but when there is localized itching, overflow of secretions or secondary infection, the infection should be controlled and then treated surgically. Surgery for congenital preauricular fistulas is mainly excision surgery, which is simpler and takes less time. However, some complex fistulas have many bifurcations or travel in a particular direction, making surgery more difficult and more likely to recur. Patients with abscesses and cysts should first be incised and drained, oral or intravenous antibiotics and other drugs, until the inflammation is almost under control, then it is appropriate to complete surgical resection. No symptoms of the patient, you can not be taken lightly, because the “little eye” at any time may be inflamed, this should focus on the details of life to prevent, do 1, to keep the ear dry. If there is water around the ear, you can use a cotton swab to wipe can, but can not get too heavy. 2, eat a balanced diet. Diet has always been a key point in human health, and congenital preauricular fistula patients should also ensure the stability of the disease from their own diet. 3, insist on exercise, but the ear should not be hit. For only white secretion outflow but has not been infected patients, although only local tingling symptoms, but still recommend early surgery, because it is very easy to secondary infection, and once the infection is localized redness, swelling, heat and pain, pus, at this time control of inflammation still need to surgery, undoubtedly aggravate the patient’s pain and economic burden. Pre-auricular fistula is infected or once infected has healed patients, need to control the infection as soon as possible after surgery, because once the preauricular fistula infection once, will recur in the future. Each time after the inflammation often cause scar adhesion, drainage is more poor, sooner or later will occur a second, third infection, and ultimately the formation of pus fistula and a large range of scar, affecting the facial appearance. So remember not to be fooled by the short-term healing caused by medication and injections, it should be completely removed as soon as possible after controlling the infection, and only surgical treatment can completely eradicate it. Understanding of this disease, I believe that we will encounter in the future in the life of the long “hamartoma” people, will not make a fuss, but also to him to publicize the knowledge of science, reminding him to pay attention to the prevention of asymptomatic, and symptoms as soon as possible to seek medical treatment, and get cured in a timely manner.