The navel, commonly known as the navel eye, is called “Shen Que” in Chinese medicine. After the baby is born, the umbilical cord is ligated and cut, leaving the stump of the umbilical cord. Under normal circumstances, the umbilical cord naturally dries up 1-2 days after birth, starts to fall off in 3-4 days, and heals on its own after 10 days. If the umbilical cord is not properly cared for after birth, bacteria can grow and multiply, causing inflammation of the umbilical cord. Umbilical care is relatively simple, every day with a cotton swab dipped in 75% alcohol, in the umbilicus from the inside out into a spiral wipe 1 week, a total of 2 times, to some secretions, blood scabs and other dirty things wipe clean; then a dry cotton swab wipe; morning and evening; after the bath or contaminated by urine and faeces should be so treated. This continuous disinfection 7-10 days, if there is no redness, swelling, exudate can stop disinfection. But a small umbilicus, the disease how big more than 10 kinds. So, what kind of disease should be alerted to the possibility of a hospital visit? At birth, if there is a lump in the umbilicus, the surface is surrounded by a transparent film, through which the intestinal tube, liver and other tissues can be seen, it is considered umbilical bulge, then you need to be promptly sent to a specialist hospital. If the intestinal canal is exposed, the baby should be covered with sterile gauze and then with a layer of plastic wrap for emergency medical treatment. After the umbilical cord is detached, if there is repeated oozing from the umbilicus and the swab can be inserted about 1cm from the center of the umbilicus, the umbilical sinus may be considered as one of the abnormal development of the yolk tube. If a granuloma-like tissue can be seen on the surface of the navel, it is considered to be umbilical velvet, and it is recommended to go to the hospital for consultation, which may require surgery. When the umbilicus is repeatedly oozing, does not improve after disinfection, the skin around it is red, or the umbilicus can be seen with stool or urine like material flowing out, or the umbilicus can be seen with intestinal tube like bright red tissue, you need to be alert to the possibility of umbilical enterocutaneous fistula or umbilical ureteric fistula and need to go to a specialist hospital. This is an umbilical hernia, which generally does not require special treatment within 2 years of age. As the baby grows and develops, the umbilical muscles slowly thicken and most of them can heal on their own.