A fetus that is two weeks on the small side will be determined to be growth restricted. Fetal growth restriction is related to a number of factors that need to be examined in detail before being determined. Fetal growth restriction means that the fetus is restricted in its growth within the uterine cavity and does not meet the standard weekly growth and development criteria. Most fetuses will be small or large by one week, and once they are small or large by more than one week, they need to be considered as growth restricted. Fetal growth restriction is related to the mother, placenta, umbilical cord and other factors, such as the mother’s uterus developmental abnormalities, severe malnutrition, umbilical cord torsion and other problems occur, may lead to the emergence of fetal growth restriction problems. It is recommended that pregnant women go to the hospital for regular checkups to see if the fetus meets the current developmental standards, and once growth restriction occurs, it should be treated actively.