Infantile umbilical hernia, also known as umbilical convexity, is characterized by a protrusion at the navel. Treatments include natural healing and surgery. The main symptom of umbilical hernia is a protruding swelling in the umbilicus, which is a reversible swelling with a diameter of about one centimeter. When the baby is lying down in a quiet state, the swelling will shrink or even disappear; when the baby cries or coughs, the swelling will protrude obviously. The cause is mainly due to congenital developmental defects in the umbilical cord, for premature babies and low birth weight babies are prone to appear, most of the children’s umbilical hernia will naturally close within one year of birth, no treatment is needed, daily parents should keep the baby’s umbilical cord dry and clean to reduce the infection of the umbilical cord, the symptomatic infants can be surgical treatment, surgery is usually chosen after 2 years of age. When parents find a swelling in the umbilical region of the infant, they should consult a doctor for a clear diagnosis. If there is severe pain at the umbilical hernia site, it suggests incarceration and requires medical attention as soon as possible.