1, late pregnancy baby is likely to have cord entanglement After the formation of placenta and umbilical cord, cord entanglement may actually occur at any time throughout pregnancy, just before the fetus fixes its fetal position, even if there is cord entanglement limb, the fetus still has a chance to slip off naturally during the continuous movement in the uterus, therefore, in the middle or early late pregnancy, even if there is cord entanglement, many ultrasound doctors will not indicate it on the report. Looking after late pregnancy, the position of the fetus is fixed, and it is at this time that the diagnosis of entanglement of the limb and entanglement of the neck becomes meaningful. The incidence of umbilical cord entanglement in late pregnancy is about 10-20%, however, it is not fixed in a limb or in a part of the body other than the neck, only in the neck is it more common. Because the neck is between the head and the limb, it is difficult to get the cord off after it is wrapped around. 2.Do I have to have a cesarean section if my umbilical cord is wrapped around my neck? Cord winding is a common phenomenon during pregnancy, and clinically it does not change the mode of delivery because of cord winding. Clinical experience tells us that many people cannot deliver by cesarean section because of one week of cord winding, but some mothers can deliver with three weeks of cord winding, depending on the development of the placenta and umbilical cord during the growth and development of the fetus in the mother. The average length of the umbilical cord is 50 centimeters, with a length range of 30 to 70 centimeters. Current technology does not allow for prenatal diagnosis through ultrasound or other means of how long the umbilical cord is left after it is wrapped around the limb or neck, if the cord is long enough to ensure that the fetus can pass through the vagina. There is no problem for the child to be delivered normally. Because the mode of birth is a practical process, only in the process of practice we can judge whether we can have a normal birth. It is important to tell pregnant mothers that cord entanglement is a common phenomenon, and that neither the pregnant mother nor the doctor can correct it by any means and in any way when the cord entangles the neck. It is still possible to try to deliver via vagina if the umbilical cord is entangled. 3, fetal cord entanglement will make the baby lack of oxygen, asphyxiation At present, the clinical situation of fetal asphyxiation due to cord entanglement is very rare, unless the remaining umbilical cord is very short after the entanglement. Frequent contractions in late pregnancy can also cause the first part of the fetus to go deeper into the uterus, but the fetus is a very intelligent little creature and if the cord is wrapped around the neck and makes him feel uncomfortable, he will not go further down. Therefore, if the umbilical cord is bypassed during late pregnancy, it is enough for the mother to remember the fetal movement by heart and go to the hospital for examination when the fetal movement is abnormal. If the fetus is in intrauterine distress due to cord bypass before delivery, in addition to the mother noting whether there are abnormal fetal movements, she should also perform fetal heart monitoring. If there is an abnormality in the fetal heart monitoring, a cesarean section may be chosen for delivery, but if there is no abnormality in the fetal heart, a normal delivery can be chosen. The process should be closely observed and the majority of pregnant women can have a smooth delivery. It can be said that the diagnosis of cord winding is definitely a Chinese characteristic, and many foreign mothers never see the diagnosis of cord winding on their ultrasound reports. I believe this phenomenon can be changed in the future, and we can also change our understanding of cord winding.