The umbilical cord of a newborn baby is covered with ligatures, cord powder, and wraps, which generally do not need to be replaced within three days after birth. After three days, you can remove the outside gauze and disinfect the child’s belly button with iodophor, and then re-cover it with sterile gauze. The umbilical cord will fall off on its own in 5-7 days, and after it falls off, the disinfection with iodophor can be stopped when the umbilical wound is dry and you can take a bath. If the umbilical cord does not fall off for more than two weeks, you can go to pediatric surgery or neonatal surgery to have the umbilical cord trimmed for the second time.