Your baby’s navel is bulging outward, and it gets bigger and harder when you cry, but smaller and softer when you are quiet or when you press it with your hand, what’s wrong with it? The baby’s navel is bulging outward, and it gets bigger and harder when he cries, but it gets smaller and softer when he is quiet or when he presses with his hands, which is clinically known as an umbilical hernia. Umbilical hernia refers to the abdominal contents by the umbilical weak defect protruding extra-abdominal hernia, is the occurrence of the umbilical extra-abdominal hernia collectively. The umbilical cord in the process of embryonic development is the latest part of the abdominal wall closed, after the umbilical cord off, newborn babies on both sides of the abdominal muscles are not completely together, the umbilical cord left defects and lack of fat tissue, and the outermost layer of the abdominal wall of the skin, fascia and the peritoneum directly linked together, become a congenital weak place. When the baby due to crying, coughing, defecation and so on to promote the abdominal pressure increases, will lead to abdominal organs, especially the small intestine, together with the peritoneum from the umbilicus gradually outward, the formation of umbilical hernia. Most umbilical hernias with an umbilical ring defect of less than 1 cm in diameter resolve spontaneously before the age of 2 and do not require special treatment. Some parents want to take homemade cloth belt and other compression measures to try to block the umbilical hernia swelling outward, but basically can not achieve the effect of control. Doctor’s Note: As a child grows and develops, the abdominal wall muscles also develop, and the umbilical ring can gradually shrink until the umbilical hernia eventually disappears. Therefore, for most children with umbilical hernias under the age of one year, most doctors will recommend withholding treatment. Once the child reaches 3 months of age, the crying will decrease and the umbilical hernia will gradually heal on its own. Even in older children, if the umbilical hernia remains untreated, it is usually possible to wait until the child is 3 years old to have the umbilical ring repaired in the hospital. It is important to emphasize that every child is different and the doctor will decide if and when treatment is needed.