From pregnancy to delivery, about 9 to 12 prenatal checkups are needed, and the content of each prenatal checkup varies. For example, the first one mainly includes routine blood test, routine urine test, infectious disease screening, liver and kidney function, electrocardiogram, heart ultrasound, liver, gallbladder, pancreas and spleen ultrasound, etc. At the same time, abdominal or vaginal ultrasound and blood HCG test are also required. The first time mainly includes routine blood test, routine urine test, infectious disease screening, liver and kidney function, electrocardiogram, heart ultrasound, liver, gallbladder, pancreas and spleen ultrasound, etc. At the same time, abdominal or vaginal ultrasound and blood HCG test are needed to exclude ectopic pregnancy. Until 28 weeks, pregnant women need to have a routine obstetric examination once a month, including routine blood test, urine test, uterine height, abdominal circumference measurement, fetal heart auscultation and other general examinations. 11~13 weeks for NT to check the thickness of fetal nuchal translucency, and 16~19 weeks for Down’s syndrome. Fetal macrosomia examination is done at 22~24 weeks, and non-invasive DNA examination or prenatal diagnostic amniocentesis is needed when the result of Down’s screening is unsatisfactory. 28~37 weeks, pregnant women should undergo obstetric examination once every 2 weeks to monitor the growth and development of the fetus and the mother’s condition. After 37 weeks, pregnant women should undergo weekly blood and urine tests, ultrasound, fetal heart rate monitoring, etc., mainly to determine fetal weight, amniotic fluid, fetal position, etc., as well as another screening for infectious diseases and vaginal secretion GBS test, to decide whether to choose a normal delivery or cesarean section. During pregnancy, you should follow the doctor’s instructions to have your labor and delivery checkups on time. If you have any other questions, it is recommended that you consult a professional doctor for guidance.