The umbilical cord is the link between the mother and the baby and is the bridge to the life of the fetus. After a newborn is born, the umbilical cord is ligated and cut, and gradually falls off to form the umbilical fossa, commonly referred to as the “navel”. When the umbilical cord is cut, a wound is formed, which is an important way for bacteria to invade the newborn’s body, causing umbiliculitis in mild cases and sepsis in severe cases, so belly button inflammation needs to be treated actively. The umbilical cord will slowly become necrotic, dry, black and scab after birth ligation. The scab will generally fall off naturally within 7-21 days depending on the baby’s own umbilical cord, and there will be a small amount of yellow ooze at the beginning of shedding, which is normal. If the umbilical cord is red at the root, or if the wound does not heal after shedding, or if the umbilical fossa is running water or pus, or even if the umbilical cord is red, swollen and hot, this is a sign of umbilical cord inflammation. The treatment of umbilical cord inflammation is based on the severity of the disease with the choice of local cleaning and disinfection, topical, oral or intravenous antibiotics. Mild cases can be disinfected with topical disinfectant iodophor. Parents wash their hands, dip a medical cotton swab in iodophor and go deep into the umbilical fossa and wrap it around, then replace it with a new iodophor swab and disinfect it three times, twice a day, to ensure that the umbilical secretions are cleaned up, and so treat most cures for 3-5 days. Some of them need to be treated with topical antibiotics such as Bactrim or erythromycin. Severe infections may cause sepsis and need to be hospitalized for comprehensive treatment such as anti-infection. Umbilical cord care is very important and scientific care is an effective way to prevent umbilical cord infection. Keep the umbilical stump and the surrounding skin clean and dry, keep the diaper below the umbilicus to avoid contamination by urine and stool, and abandon the bad custom of tightly wrapping the umbilical cord. If redness or pus is found around the umbilicus, it is recommended to seek medical attention promptly so that the physician can assess whether the umbilical cord is infected and the severity of the infection, and then treat it under the physician’s guidance.