When a baby is in its mother’s womb, it depends on its mother’s umbilical cord to survive. When the baby is born, the umbilical cord needs to be cut. The umbilical cord of newborns usually starts to fall off 7-10 days after birth. So, what’s wrong with the umbilical cord not falling off in 20 days for newborns? There may be the following reasons: 1, the baby is using a gel umbilical cord: some small hospitals or obstetrics and gynecology hospitals in more remote areas, when the baby is doing the umbilical cord ligation surgery, or the previous kind of gel umbilical cord, it will fall off later. 2, the baby is a wound difficult to heal body: a small number of babies are born with wounds that are difficult to heal, there will be umbilical cord ligation for 20 days and still not fall off. 3, baby umbilical cord is infected: 20 days after birth, the umbilical cord has not fallen off, most parents do not take care of the umbilical cord is not in place, resulting in the umbilical cord received infection, resulting in the umbilical cord is difficult to heal, do not fall off. 4, baby poor physique: For some premature babies, babies with poor physique or babies suffering from other diseases, their body nutrition is difficult to keep up with their own needs, resulting in slow recovery of the wound, the umbilical cord has not fallen off after 20 days of care. 5, the doctor’s umbilical cord ligation is not in place: the time of the umbilical cord shedding and the doctor’s ligation method also have a certain relationship, some doctors in the umbilical cord ligation surgery, if the umbilical cord is not tied tightly, it is easy for the umbilical cord to be delayed. The biggest threat of the umbilical cord persistently not falling off is the ability to develop umbilical infection, which in turn affects the body and causes infection in the body, because the umbilical cord is the gateway between the baby’s body and the outside world. It is recommended that the umbilical cord be disinfected with iodine volts, and it is recommended that the baby’s umbilical cord be disinfected with iodine volts frequently to keep the umbilical cord dry and clean to avoid infection of the umbilical cord and to be treated at the hospital if necessary.