Prenatal care is an important measure to reduce maternal mortality and birth defects. The famous obstetrician Eastman once pointed out that “in this day and age, maternal life can be saved by no other means. Traditional prenatal care, especially the number, content, gestational week, and interval of prenatal checkups, is not supported by evidence-based medical evidence and is not adapted to the requirements of modern prenatal care, and the protocols of prenatal checkups vary greatly from region to region and from hospital to hospital in China. This is also the reason for the high rate of maternal mortality and birth defects in China at present, and the preconception health care (3 months before pregnancy) 1. 2. Routine examination contents (for all women planning to get pregnant) (1) Screening for preconception high-risk factors (2) Physical examination 3. Auxiliary examination items 4. Preparation items II. The schedule of pregnancy care is determined by the purpose of prenatal checkups. (i) The number of prenatal checkups and gestational weeks are reasonable to ensure the quality of health care during pregnancy and to save health care resources. According to the needs of prenatal checkups, the recommended gestational weeks for prenatal checkups in this guideline are: 6-8 weeks of gestation; 10-14 weeks; 15-19 weeks; 20-24 weeks; 24-28 weeks; 30-32 weeks; 32-36 weeks; 38-41 weeks. A total of 8-11 visits. For those with high-risk factors, increase the number of times as appropriate. (2) Contents of prenatal checkups 1. First prenatal checkup (6-8 weeks of gestation) Health education and guidance on routine health care contents (1) screening for high-risk factors during pregnancy; (2) physical examination Auxiliary examination items: blood routine; urine routine; blood type; RH; liver and kidney function; fasting glucose; five items of hepatitis B; syphilis, HIV, ultrasound; electrocardiogram. Preparation items 2. Health education and guidance on routine health care content for antenatal checkups in 10-14 weeks of pregnancy (for all pregnant women) (1) Establishing a pregnancy health care handbook, analyzing the results of the first antenatal checkup, focusing on asking about vaginal bleeding and diet; (2) Auxiliary physical examination: ultrasound to measure fetal NT Preparation items 3. (1) Asking about vaginal bleeding, diet and exercise (2) Auxiliary physical examination: midtrimester aneuploidy serological screening (AFP/HCG/Ue3) Preparation items 4. 20-24 weeks of gestation antenatal checkup health education and guidance on routine health care content (for all pregnant women) (1) Asking about fetal movement, vaginal bleeding, diet and exercise; (2) Auxiliary physical examination (1) Ask about fetal movement, vaginal bleeding, diet and exercise; (2) physical examination auxiliary examination: fetal system ultrasound screening; blood routine; urine protein. Preparation items 5, antenatal checkups at 24-28 weeks of gestation Health education and guidance on routine health care contents (for all pregnant women) Ask about fetal movement, vaginal bleeding, contractions, diet and exercise; physical examination auxiliary examinations: 50Gg retreat (50g GCT ≥7.8mmol/l, ≤11.1mmol/l, then 75g OGTT; ≥11.1mmol/l, then measure (fasting blood glucose); urine protein preparation items 6. 30-32 weeks of gestation antenatal checkup health education and guidance on routine health care content (for all pregnant women) ask about fetal movement, vaginal bleeding, contractions, diet, exercise; physical examination auxiliary examination: urine protein, liver function, NST examination preparation items 7. 32-36 weeks of gestation antenatal checkup health education and guidance on routine health care content ask about fetal movement, contractions, see Health education and guidance on routine health care contents (for all pregnant women): asking about fetal movement, contractions, redness, delivery plan, etc.; physical examination auxiliary examinations: ultrasound, NST. Preventive items 3. Contents of routine examinations not recommended during pregnancy 1. external pelvic measurements 2. Toxoplasma gondii, cytomegalovirus, herpes simplex virus serologic screening 3. bacterial vaginosis screening 4. cervicovaginal discharge FFN testing and ultrasound cervical assessment 5. edema screening 6. urine protein and blood tests at each maternity visit 7. thyroid function screening 8. tuberculosis screening