Normally, blood pressure does not increase in late pregnancy. However, some pregnant mothers are diagnosed with hypertensive disorders of pregnancy when they develop high blood pressure after 20 weeks of gestation, return to normal at 12 weeks postpartum, or continue to have elevated blood pressure until after 12 weeks postpartum. Hypertensive disorders of pregnancy are a group of disorders with an incidence of 5-12%. This group includes gestational hypertension, preeclampsia, eclampsia, chronic hypertension with preeclampsia, and chronic hypertension in pregnancy, which is a serious threat to the health of mothers and infants and is a major cause of increased maternal and perinatal morbidity and mortality. The pathogenesis, clinical manifestations, and clinical management of each type are different. Since there are many types of preeclampsia with different pathogenesis and clinical management, in order to avoid aggravation of the condition and threat to the health of mother and child, it is recommended that patients should seek timely medical treatment, complete detailed examination under the professional guidance of obstetricians and gynecologists, and take reasonable treatment measures.