There are many items that need to be done for pregnancy checkups, including monitoring the health of the pregnant woman as well as the fetus. Prenatal checkups are generally required to start from 6-8 weeks of pregnancy, once every four weeks before 28 weeks, once every two weeks from 28-36 weeks, and once a week from 36 weeks, and if there is any abnormality, the doctor will increase the number of checkups according to the situation. 1. Health monitoring of pregnant women: The examination of pregnant women mainly includes routine checkups such as weight, blood pressure, measurement of uterine height and abdominal circumference, and observation of pregnant women to see if they have edema. Laboratory tests include routine blood tests, urine tests, blood glucose, liver tests, kidney tests and thyroid tests, etc. Regular ultrasound tests are also needed to clarify the development of the fetus. If abnormalities are found, targeted measures can be taken. 2. Fetal health monitoring: mainly through ultrasound examination to clarify whether the development of the fetus is normal or not, whether the placenta is normal or not, how much amniotic fluid is present, and whether there is any developmental abnormality of the fetus. Other can also through the fetal heart monitoring, clear whether the fetus intrauterine hypoxia and so on. In addition, nt examination, i.e., fetal nuchal translucency thickness examination, Down’s syndrome screening, etc., can effectively screen for chromosomal disorders, such as trisomy 21, which facilitates early intervention.