Down’s high risk at age 30 is not common. Down’s screening is only a preliminary screening for the presence of chromosomal abnormalities, not a final diagnosis, there is a critical risk, low risk and high risk, the risk value of Down’s screening is directly related to age, fetal biparietal diameter, gestational weeks, maternal weight, etc.; which increased the proportion of older pregnant women aged 35 years and above who appear to have a high risk for their age. If you have a high risk of Down’s syndrome at any age after pregnancy, you need to have further non-invasive DNA or amniocentesis to make a clear diagnosis. However, not all Down’s high risk 30 years old to do non-invasive DNA, or amniocentesis will necessarily be fetal chromosomal abnormalities and other conditions; if the test results for low risk, you can continue to continue the pregnancy, for high risk, the need to terminate the pregnancy. If there is any doubt about whether Down’s high risk 30 is common, it is recommended to consult a doctor.