The majority of normal newborns have an irregularly rounded navel, because the nature of the navel is due to the formation of the umbilical cord scar, which will gradually form after the umbilical cord is broken, thus forming the navel. As long as there is no redness or swelling around the navel and no abnormal secretions, and the newborn is not crying and upset, the navel is not obviously protruding, this is normal and parents need not worry too much. Only after the umbilical cord is broken to the newborn, the daily routine disinfection can be. If the newborn’s belly button is bulging very obviously, or there are symptoms of pus, we should consider the formation of umbilical hernia or umbilicosis, we should promptly take the newborn to the hospital.