NT normal Down’s syndrome high risk is a condition that may occur during labor and delivery testing, suggesting that the fetus has a high likelihood of Down’s syndrome and should be further examined. NT test refers to the thickness of the fetal nuchal translucency in early pregnancy, if the thickness is thickened, it suggests a high risk of Down’s syndrome, cardiac malformation, etc. If the thickness is normal, it suggests a low risk, but it does not completely exclude the disease, therefore, a high risk of Down’s syndrome may also occur with a normal NT test. When the high risk of Down’s syndrome suggests that the fetus has a high probability of being Down’s syndrome, non-invasive DNA, amniocentesis and other further tests should be carried out to confirm the diagnosis of the fetus, such as Down’s syndrome, should be immediately induced to terminate the pregnancy. When the results of the maternity test indicate fetal anomalies, the pregnant woman should be actively under the guidance of a professional physician to clarify the specific conditions, and if necessary, timely treatment to avoid adverse pregnancy outcomes.