The role of the navel is very important, in the fetal period there are umbilical artery and umbilical vein inside the navel, connecting the mother and the role of the fetus, can bring the mother’s nutrition through the umbilical vessels into the body of the fetus, to promote the growth and development of the fetus. After the birth of the fetus, the navel degenerates to form the navel eye, the general navel in the body plays a relatively light role, mainly to achieve the role of aesthetics. As the navel is in the surface of the human body is at the golden mean, so the body’s beauty relatively play a very important role. In addition, if the body has certain pathologies, the navel can also play a very important role, common is cirrhosis of the liver when the portal hypertension, due to high portal vein pressure, so the need to find the lateral circulation, to reach the purpose of blood return, this time the umbilical vessels can be reopened.