Infant umbilical hernia is caused by a congenitally thin abdominal wall at the navel, which is underdeveloped and leads to a protrusion. 80% of infant umbilical hernias will gradually narrow and even naturally heal as the child ages and grows in stature, requiring no special treatment. Only a small fraction of infants, particularly those with hernia rings larger than 2 cm, or if the hernia has not closed by the age of two, will need surgical treatment. Normally, it is only necessary to ensure that the child avoids crying excessively and to promptly treat any gastrointestinal diseases to prevent an increase in abdominal pressure, causing the hernia to protrude.