The umbilical cord needs to be used within 24 hours after birth because the blood flow of the umbilical cord is not completely interrupted within 24 hours after birth and the umbilical cord is relatively moist, so the application of the umbilical cord can play a certain role in stopping bleeding and protecting the umbilical cord. Use hydrogen peroxide and then iodine volts until the umbilical cord has completely fallen off, then disinfection is no longer necessary. Usually, the umbilical cord does not need to be guarded, nor do the umbilical patches need to be used, but the umbilical cord should be protected with umbilical patches when bathing, because water in the umbilical cord can easily cause infection.