Prenatal checkup refers to a series of checkups done by pregnant women before giving birth, including items such as routine blood test, infectious disease screening, routine urine test, ultrasound, etc.,. 1. Routine blood tests: These include tests for ABO blood type, Rh blood type, platelets, and white blood cells to determine whether the pregnant woman has anemia or blood diseases. 2. Infectious disease screening: including hepatitis B, hepatitis C, syphilis, AIDS, through comprehensive screening, can try to avoid the occurrence of viral hepatitis in pregnancy, syphilis, AIDS and other conditions, to achieve early intervention. 3. Urine routine examination: through the examination of urine, it can check whether the kidney function is good or not. 4. Ultrasound: mainly ultrasound of the uterine adnexa to see the shape of the uterus and so on. Before the prenatal examination, the pregnant woman should provide the doctor with a detailed family history as well as maternal history. Once any abnormalities appear after the examination, they should be carefully communicated to the doctor and treated in time.