Ultrasound examination in late pregnancy can not only monitor the growth and development of the fetus

but its examination indicators can also reflect the birth status of the newborn

which provide an important basis for early clinical intervention

and is helpful to improve the birth quality of the newborn. This article reviews the research progress of the application value of amniotic fluid index

fetal blood flow parameter index

fetal heart rate and placental maturity index in the neonatal birth status in late pregnancy.