Newborns usually have their umbilical cord fall off after 7 to 10 days and after 15 days the umbilical cord is completely healed. Currently, experts recommend leaving it open, no need to cover it, but it is necessary to pay attention to monitoring, using antiseptic medicine for the newborn's umbilical cord, taking proper care to keep the baby's umbilical cord clean, dry and promptly detect any abnormalities, to prevent umbilical cord infection.