Small holes in the ears are mainly caused by preauricular fistula, which is a relatively common congenital condition and is also due to genetic factors. In terms of diagnosis, you can visit the ENT department, and the diagnosis can be clarified through physical examination and the doctor’s clinical experience. If the condition is stable and there is no redness, swelling or pain, we can consider observing the condition, disinfecting it with iodophor and keeping it dry to avoid acute infection and inflammation. If acute infection and inflammation have occurred, resulting in local redness, pain or pus, antibiotic anti-infection treatment should be considered. If an abscess has formed, it is also necessary to make an abscess incision and drainage and wait about 2 months after the acute inflammation has been controlled to perform a preauricular fistula removal surgery.