The number of check-ups during pregnancy is about 9-12 times. Depending on the actual condition of the pregnant woman, high-risk pregnant women need to increase the number of obstetric examinations as appropriate. The timing of the first prenatal checkup should begin with the confirmation of early pregnancy, with one checkup in early pregnancy, three in mid-pregnancy, and five to eight in late pregnancy. Blood pressure and weight should be measured each time, and uterine height and abdominal circumference should be measured after 24 weeks of pregnancy. The first checkup includes blood type, blood routine, blood clotting, liver and kidney function, thyroid function, ECG, etc. Secondly, ultrasound is needed to see the growth and development of the fetus, as well as NT ultrasound for the first time to detect malformations, Down’s syndrome screening in early pregnancy, non-invasive DNA, etc. In mid-pregnancy, glucose tolerance screening is mainly performed to determine if there is a risk of gestational diabetes. It is also necessary to improve midtrimester screening to screen for major structural malformations, midtrimester Down’s syndrome screening, non-invasive DNA testing and amniocentesis to rule out any fetal developmental malformations. In late pregnancy, monitoring of fetal growth and development, additional screening for structural malformations, fetal heart monitoring, pelvic measurements, GBS screening, and early pregnancy laboratory review are performed. Therefore, the maternity checkups are different for different weeks of pregnancy. It is recommended that pregnant women can consult their doctors before the checkups to prepare for the maternity checkups, and the checkup schedule should be strictly implemented according to the doctors’ requirements. Standardized and systematic maternity checkups are the key links to ensure the health and safety of mother and child.