-Measurement of uterine height: Uterine height refers to the distance from the bottom of uterus to pubic symphysis, which is one of the important indexes to judge the size of fetus.
-Fetal heart monitoring: Fetal heart monitoring can detect the heartbeat of the fetus. If the fetal heart rate is abnormal, it may indicate that the fetus has some problems.
-Ultrasonic examination: Ultrasonic examination can observe fetal development, organ structure and amniotic fluid volume.
-Blood tests: Blood tests can detect whether pregnant women and fetuses have certain diseases or infections.