The navel is the broken end of the umbilical cord formed by the degeneration of the umbilical cord, which plays a lighter role in the body after birth. The umbilical cord is a very important organ during the fetal period, containing the umbilical artery and umbilical vein, which mainly plays the role of connecting the mother and the fetus, and is able to transport nutrients from the mother to the fetus through the umbilical pipeline to promote the growth and development of the fetus. After normal delivery, the umbilical cord degenerates to form the navel. Usually should pay attention to keep the navel clean and hygienic, wash secretions, avoid external stimulation, avoid rubbing and hand picking the navel, otherwise it is easy to cause local infection. If there are symptoms of discomfort in the navel, you should go to the hospital in time for examination and treatment as prescribed by the doctor.