The schedule of pregnancy checkups is roughly as follows: the first checkup is from 6-13 weeks plus 6 days, the main checkups are to establish the pregnancy health care booklet, determine the gestational weeks to project the expected delivery date, assess the high-risk factors during pregnancy, monitor blood pressure, body mass index, fetal heart rate, check blood and urine routine, blood type, blood sugar, liver and kidney function, surface antigen, as well as screening for syphilis spirochetes and HIV, and electrocardiogram. The second maternity checkup is at 14-19 weeks plus 6 days, one is to analyze the results of the first maternity checkup, and the other is to monitor blood pressure, weight, fundal height, abdominal circumference, fetal heart rate, and serological examination of aneuploidy mothers in the middle of pregnancy, at around 15-20 weeks. The third obstetric examination is around 20-23 weeks plus 6 days, also routine blood pressure, weight, fundal height, abdominal circumference, and fetal heart rate. The intermediate fetal system B-ultrasound is at 18-24 weeks, and then routine blood and urine tests. The fourth check-up is from 24 to 27 weeks plus 6 days. In addition to the routine blood pressure, weight, fundal height, abdominal circumference, fetal heart rate, OGTT test, blood and urine routine will be done. The fifth checkup is from 28-31 weeks plus 6 days, again with blood pressure, weight, fundal height, abdominal circumference, fetal heart rate, fetal position, obstetric ultrasound, blood and urine routine. The sixth checkup was from 32-36 weeks plus 6 days, with routine blood pressure, urine, weight, fundal height, abdominal circumference, fetal heart rate and fetal position. The 7th-11th checkups are between 37-41 weeks plus 6 days, with blood pressure, weight, fundal height, abdominal circumference, fetal heart rate and fetal position, as well as cervical scoring, blood and urine, and AST, which is done once a week.