Umbilical hernia refers to a protrusion formed by abdominal contents through the weak area of the umbilicus. After the umbilical cord falls off in the neonatal period, the umbilical scar area, due to the phase when the umbilical cord passes through the abdominal wall during fetal life, creates a congenital separation in the abdominal wall. In infancy, the abdominal muscles on either side do not completely close at the midline, leaving a defect and forming the umbilical ring. When crying, coughing, or struggling increases intra-abdominal pressure, the abdominal contents gradually push outwards through the umbilicus, forming an umbilical hernia. Most umbilical hernias can heal on their own within one year through the contraction of the umbilical fascial ring. Therefore, unless incarceration occurs, observation and waiting with non-surgical treatment can be adopted to promote healing before the age of two.