Hypertension during pregnancy has a high incidence in China and seriously endangers the health of mothers and children, as follows: 1, affects the normal growth and development of the fetus: hypertension during pregnancy leads to vasoconstriction of the pregnant woman’s whole body and spasm of the placental vessels, causing a corresponding decrease in blood and oxygen supply to the fetus. Severe cases lead to fetal growth restriction, slow growth rate, various development indicators below the normal pregnancy week; 2, affect the fetal intellectual development: gestational hypertension can affect the fetal brain development, resulting in delayed development of the nervous system. Hypertension during pregnancy must be taken seriously and treated by medication to avoid harming the health of mother and child, so as to avoid complications in the middle and late pregnancy and termination of pregnancy as a last resort.