Early Down’s screening blood sampling, is required to fasting, early Down’s screening is mainly screening, the fetus has a high risk of congenital anomalies, such as trisomy 21, trisomy 18. It is performed between 11-13 weeks of pregnancy and also requires a comprehensive assessment with reference to the woman’s age, weeks of pregnancy, weight, etc. Combined ultrasound nt is also recommended.In case of high risk, amniocentesis is required to confirm the diagnosis. Women over 35 weeks of age, do not do Down’s syndrome screening, it is necessary to do amniocentesis to confirm the diagnosis, if someone is afraid of side damage, you can also choose non-invasive DNA, but it is also a screening is not a confirmation of the diagnosis, the woman in the pregnancy, you need to carry out regular prenatal checkups. In addition, after pregnancy, pay attention to appropriate rest, maintain a relaxed mood, avoid tobacco and alcohol and other unfavorable stimuli, appropriate increase in nutrition, which is conducive to the supply of nutrients to the pregnant woman herself and the normal development of the fetus.