The fetal nasal bone value is the length of the fetal nasal bone. The standard section for fetal nasal bone measurement is the mid-sagittal plane of the fetal head. The image is magnified to 2/3 of the screen to show only the fetal head and upper chest, with the fetal nasal bone oriented horizontally and the long axis of the ultrasound probe parallel to the nasal bone. Three clear lines are visible in this view, and the thicker and still stronger line in the center is the nasal bone. The full length of the nasal bone is measured three times and averaged, which is the nasal bone value. Nasal bone length measurements vary from pregnancy to pregnancy and from individual to individual due to different rates of development. It is not possible to determine whether a fetus is developing abnormally based on the nasal bone measurement alone, but requires a comprehensive analysis by a medical professional in conjunction with all the examination indicators. Pregnant women should pay attention to the prenatal checkups during pregnancy, and actively listen to the professional doctor’s advice to do a comprehensive care and health care work, which can effectively ensure the safety of the delivery. During pregnancy, pay attention to rest more, at the same time should relax, avoid nervousness, anxiety, any discomfort should be timely to the hospital, the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.