When the cord is found to be wrapped around the neck for 3 weeks during pregnancy, pregnant women need to strengthen self-counting fetal movements to observe the condition of the fetus in the uterine cavity, and strengthen detection in the late pregnancy, and do ultrasound to measure the cord blood flow resistance index and the elasticity of the cord wrapped around the neck, which are helpful to predict whether intrauterine hypoxia occurs in the fetus. Regular fetal heart monitoring, if the fetal heart monitoring rating of 10 points and no symptoms of hypoxia, pregnant women can continue to do regular maternity checkups, if frequent variation and decreases occur when doing fetal heart monitoring, which cannot be relieved by oxygen and changing the position, the pregnancy should be terminated in time according to the specific situation, and the umbilical cord winding for 3 weeks or more is indicated for cesarean delivery at the time of labor.