Many young mothers and fathers unintentionally find a small hole in the front of their child’s ear, sometimes discharging white discharge, and are very curious to know if it is a normal structure. In fact, the small hole in front of your child’s ear is medically called a congenital preauricular fistula. A preauricular fistula is a tube left behind when the mother’s first and second w arches do not melt completely during pregnancy. It has a genetic link. It is not uncommon to see children whose parents have a preauricular fistula also have the condition. Since so many people suffer from this disease, how does it affect the body. In fact, most people do not get infected as long as they pay attention to local hygiene and avoid blocking the fistula. However, if the fistula is infected, it can become infected repeatedly and cause a lot of pain to the child. Eventually, surgery is required to remove the fistula. If the fistula is completely removed, it can be avoided in the future. So, when is the right time to operate? Usually, doctors recommend that patients have surgery 2 weeks after this infection is under control, as this will reduce intraoperative bleeding and make it relatively easy to remove. Of course, if the infection is recurrent and difficult to control completely, surgery during the infection period is also necessary, but the risk is increased.