The small hole in the ear is actually a preauricular fistula, which belongs to a relatively common congenital malformation. Most people do not feel any abnormal sensation, and a few people may feel mild itching, and sometimes a small amount of smelly white secretion will come out after local squeezing, which is actually secreted sebum. If there is no local secondary bacterial infection. Generally there are no obvious uncomfortable symptoms and no special treatment is needed, but if there is always recurring infection, such as redness and pus flow, surgery is needed to remove the fistula.