The baby’s umbilical cord has not fallen off for 20 days, you need to observe whether the umbilical cord is inflamed and infected, if the area around the umbilical cord is dry and there is no exudate, you can continue to observe for 1 week, if the cord has not yet fallen off by itself, you can go to the hospital for umbilical cord severance treatment. If the umbilical cord is already red, swollen and oozing, you should go to the hospital for anti-inflammatory treatment and then disconnect the umbilical cord. The umbilical cord of a newborn usually falls off about 7-10 days after birth, but due to individual differences, as well as the thickness of the umbilical cord and the tightness of the root of the cord, the umbilical cord stump may be retained and fall off earlier or later. If the umbilical cord has not fallen off after more than 20 days of birth, further treatment is needed depending on whether the umbilical cord is infected or not. If the umbilical cord is red, swollen and painful with oozing, it means that there is infection, and you should go to the hospital for anti-inflammatory and umbilical cord severance treatment. If the umbilical node is dry without redness, swelling and oozing, the baby can be sterilized with povidone-iodine daily for 1 week, and wait for the baby to fall off by itself, and if the baby has not fallen off after 1 week, it can be disconnected from the umbilicus.