Umbilical cord detachment generally means the umbilical cord of a newborn baby falls off, and after it is detached, it usually needs to be persistently sterilized for about 3-7 days. Once the umbilical cord has fallen off and there is no inflammation, bleeding, redness, swelling or oozing from the umbilicus, and the wound is slowly healing, there is no need to sterilize the umbilical cord. The umbilical cord of newborns will usually fall off in 1-2 weeks, longer may take about a month to fall off, after the umbilical cord falls off, if the wound has not healed, you need to disinfect it every day, you generally need to insist on disinfecting it for about 3-7 days to keep the umbilical cord clean, when the umbilical cord has no inflammation, bleeding, redness, swelling, oozing and so on, and the wound slowly heals, then there is no need to disinfect it again, to keep the area clean and dry. After the umbilical cord is removed, keep the umbilical cord clean and dry to avoid sweltering heat causing discomfort to the umbilicus, and also pay attention to avoid rubbing the umbilicus to avoid causing damage to the umbilical skin. If the umbilicus is inflamed, redness, swelling, purulent discharge and so on, it should be timely to seek medical attention.