Umbilical hernia in children is mainly caused by an unsealed navel ring. Its treatment should be based on specific clinical symptoms and age. If the hernia does not retract, it can be treated conservatively or surgically. Conservative treatment involves returning the hernia contents to the abdominal cavity and using an object the size of a coin, wrapped externally with gauze, to hold it in place and prevent movement. Generally, umbilical hernias in infants under six months can be cured with conventional treatment methods, and the treatment effect is very good. However, if the diameter of the navel ring exceeds 1.5 cm after the age of two, surgical treatment should be considered. For children over five years of age who still have symptoms of an umbilical hernia, conservative treatment is ineffective, and surgery should be performed as soon as possible. Umbilical hernias are a common condition, but not serious, requiring only dynamic observation and timely medical treatment if severe.