There is a small bump on the baby’s auricle, clinically there are mainly the following possibilities: 1, sebaceous cysts on the surface of the auricle also known as chalk tumors, can also be small acne, may be related to the child sometimes often on fire eating spicy and stimulating constipation, like to eat snacks, often scratching the ear with their hands, etc., may be related, generally this situation if relatively small, no discomfort can be observed. If there is local breakage, pain, irritation, or pus flow, then this condition needs to be treated by a doctor for local anti-inflammatory disinfection. 2. congenital diseases on the surface of the ear, such as teratoma or the like, which may have hair or other things inside, this condition is very rare clinically. 3. pigmented moles on the surface of the ear or the like, this condition also exists, generally moles may be congenital and have been there since birth. 4. If it is large, it can be touched with a sense of fluctuation and beating. If it is small, it may not need to be treated clinically, just observe it and pay attention not to break it, as it may bleed more than once.