17 weeks of pregnancy already belongs to the middle of pregnancy, and pregnant women in the middle of pregnancy usually check once a month. Routine checkups and some special checkups can be carried out at 17 weeks of pregnancy.1. Routine checkups: usually pregnancy is checked from 12 weeks, 17 weeks usually belongs to the third maternity checkup, mainly checking some routine items, such as height, weight, blood pressure, breast, blood routine, urine routine, etc., to exclude chronic diseases such as hypertension, diabetes or other physical abnormalities of pregnant women to ensure health and safety during pregnancy. In addition, basic items such as measurement of uterine height, measurement of abdominal circumference and ultrasound examination will be performed to observe fetal development and promptly identify risks. 2. Special examination: prenatal diagnosis for people with higher risk during pregnancy, high-risk groups such as those over 35 years old, family history of disease, history of chronic diseases, etc. In addition, 17 weeks of pregnancy is a better time to screen children with Down’s syndrome. At this time, the fetus can be checked for the risk of Down’s syndrome through amniocentesis and non-invasive DNA, and the results are more accurate. The medical checkups vary slightly from hospital to hospital, so you can consult the hospital and choose according to your situation.