Laboratory tests, ultrasonography, fetal heart rate monitoring, etc. must be performed during pregnancy under the guidance of a doctor. 1. Laboratory tests: Laboratory tests must be performed during pregnancy to understand the basic condition of the pregnant woman, such as routine blood tests, routine urinalysis, blood grouping, liver and kidney function, hepatitis B five and AIDS antibody and syphilis serum antibody tests, thyroid function tests, fasting blood sugar and so on. 2. Ultrasonography: Ultrasonography is necessary in early pregnancy to clarify intrauterine pregnancy, fetal system ultrasonography in 20~24 weeks of pregnancy to screen the fetal structure and development, and ultrasonography in the later stage to understand fetal growth and development, amniotic fluid volume and fetal umbilical cord blood flow and other conditions. 3. Fetal heart rate monitoring: In late pregnancy, we should follow the doctor’s instructions to carry out fetal heart rate monitoring to monitor the intrauterine situation of the fetus, and follow the doctor’s instructions to measure the fetal movement. Reasonable and standardized obstetric examination during pregnancy can ensure the quality of pregnancy health care, under the guidance of the doctor on time and standardized obstetric examination.