Pregnant women 28 weeks to do routine checkup items, ultrasound, pediatric heart ultrasound, glucose tolerance screening and other items. 1. Routine checkup items: 28 weeks pregnant to do routine checkup items, such as measuring blood pressure, weight, uterine fundal height, abdominal circumference, fetal heart rate, fetal position, blood routine, urine routine, coagulation function test, bile acid test and other items. 2. Four-dimensional ultrasound: 22-28 weeks pregnant can go to do four-dimensional ultrasound examination, some women did not do before 28 weeks, try to complete the examination at 28 weeks, do not wait for the fetus month is too large before doing four-dimensional ultrasound, the fetus in the uterus to reduce the range of motion, may affect the results of the examination. 3. Pediatric cardiac ultrasound: fetal heart abnormalities or strong echoes in the ventricles, it is recommended to do pediatric cardiac ultrasound before 28 weeks to determine, if necessary, further amniocentesis or umbilical cord blood puncture examination. 4. Glucose tolerance screening: Glucose tolerance screening can be done in 24-28 weeks of pregnancy to find out whether the pregnant woman has gestational diabetes, and this test is not done before 28 weeks of pregnancy. It is important to do a good job of pregnancy maternity testing at all times after pregnancy, and abnormalities can be detected in a timely manner.