A child’s umbilical cord can fall off around 7-10 days after birth. There are individual differences in the time it takes for the umbilical cord to fall off, depending on the care of the umbilical cord and whether or not an infection has occurred. 1. Umbilical care: It is very important to take care of the umbilical cord of a newborn baby after birth. If the umbilical cord of a newborn baby is kept clean and dry, and it is not contaminated by raw water or urine, most of the umbilical cords will fall off faster, and it is possible that the umbilical cords will fall off in 3-5 days after birth. 2. Infection: If the umbilical cord is wet with raw water when bathing the newborn or if the diaper is not changed in time and the urine soaks the umbilical cord, resulting in infection of the umbilical cord area of the newborn, causing redness of the umbilical cord skin, oozing, odor, etc., the umbilical cord should be prolonged, and if the infection is serious, you need to go to the hospital for medical treatment in a timely manner. If the umbilical cord is infected, you need to go to the hospital in time for treatment.