Fetal neck jagged indentation is generally considered to be a possible presence of three weeks of umbilical cord wrapping around the neck of the fetus. Fetal neck jagged indentation, is pregnant women in the ultrasound examination of the fetus and appendages found in the ultrasound, is a kind of ultrasound description of the diagnosis, generally consider that the fetus may have the umbilical cord around the neck of the three weeks of the situation, such as winding tighter, may cause certain effects on the baby, such as chronic intrauterine hypoxia, etc., the process of delivery may also appear fetal heart abnormalities, fetal distress, labor abnormalities, and so on. Ultrasound found that the fetal neck jagged indentation, pregnant women should pay attention to regular obstetric examination, learn to count the fetal movement at home by themselves, and regular fetal heart monitoring; if abnormal fetal movement occurs, it should be timely to the hospital, and under the advice of the doctor to carry out the relevant examinations and treatments, so as not to cause serious adverse consequences.