Whether a pregnant woman with a 40-week pregnancy umbilical cord around the neck for 3 weeks can be delivery, need to be based on the umbilical cord winding tightness and the length of the umbilical cord, in addition, whether a pregnant woman can be successfully delivery is also subject to the force of delivery, birth canal, the fetus and the mental and psychological factors, and need to be analyzed comprehensively. A, can be a normal delivery: 1, women in labor: if the previous delivery of women in labor is relatively smooth, at the same time, the fetal head is low, fetal heart rate monitoring is not abnormal, the doctor assessed that the delivery can be carried out within a short period of time, in the case of neonatal asphyxia rescue can be carried out under the situation of vaginal trial of labor; 2, the umbilical cord is not abnormal: if the umbilical cord length is sufficient at the same time, the cord wrapping is more loose, the pregnant woman’s physical condition is also in good condition can also be carried out in a trial of labor, but because of the existence of high risk factors, so a normal delivery. However, due to the existence of high-risk factors, it is necessary to closely observe the fetal heart rate monitoring and the descent of the fetal head to determine whether the fetus has hypoxia and delayed descent of the fetal head, if such phenomena, it is recommended to carry out cesarean section surgery in a timely manner. Secondly, it is not possible to have a normal delivery: if the remaining length of the umbilical cord is short after 3 weeks, it may affect the descent of the fetal head during delivery, or the umbilical cord may be relatively shorter due to pulling during the descent of the fetal head, and at the same time, pulling the umbilical cord too tightly will affect the passage of the blood flow, resulting in fetal ischemia, hypoxia, and the emergence of intrauterine distress, resulting in abnormal fetal heartbeat, which will jeopardize the safety of the pregnant woman and the fetus and at this point, it is suggested to have a Cesarean section operation.