There is no significant change in systolic blood pressure in normal pregnancy, and diastolic blood pressure will also decrease mildly; there is often mild lower limb swelling in the late stage of normal pregnancy due to compression of the inferior vena cava by the uterus and obstruction of blood return, but it subsides after rest; there is no protein in the urine of normal pregnant women, and these are all normal phenomena. If the pregnant woman’s blood pressure reaches 140/90 mmHg; the swelling does not disappear after rest; and protein appears in the urine, these constitute the three major manifestations of hypertensive disorders in pregnancy. Hypertensive disorders in pregnancy include gestational hypertension, preeclampsia, eclampsia, chronic hypertension complicated by preeclampsia and chronic hypertension combined with pregnancy, among which gestational hypertension, preeclampsia and eclampsia are specific to pregnancy. The disease mostly occurs after 20 weeks of gestation and is characterized by hypertension and proteinuria, which may be accompanied by systemic multi-organ impairment or failure; in severe cases, convulsions, coma and even death may occur. Hypertensive disorders during pregnancy are a serious threat to the health of mothers and infants, and are one of the major causes of maternal, fetal and neonatal mortality. The incidence of hypertensive disorders in pregnancy is 9.4%-10.4% in China and 7-12% in foreign countries. The occurrence of hypertensive disorders in pregnancy is closely related to the following high-risk factors: 1, primigravida 2, maternal age less than or greater than 35 years 3, multiple pregnancy 4, previous history of hypertensive disorders in pregnancy, family members with hypertension or hypertensive disorders in pregnancy 5, chronic hypertension 6, chronic nephritis 7, antiphospholipid antibody syndrome 8, hereditary prone to embolism 9, diabetes 10, obesity 11, vascular T235 positive gene 12, high body mass index 13, history of preeclampsia in the former wife of the male partner 14, malnutrition 15, low socioeconomic status, etc. Typical clinical manifestations of hypertensive disorders in pregnancy are hypertension, edema, and proteinuria after 20 weeks of gestation. The degree of lesions varies. Mild cases may be asymptomatic or mildly dizzy, with mildly elevated blood pressure, accompanied by edema or mild proteinuria; severe cases show headache, blurred vision, nausea, vomiting, persistent right upper abdominal pain, etc., significantly elevated blood pressure, increased proteinuria, significant edema, and even coma and convulsions. The disease is mostly progressive aggravation, can be complicated by 1, cerebrovascular accident 2, hypertensive disease of pregnancy heart disease 3, early placental abruption 4, coagulation dysfunction 5, HELLP syndrome 6, acute renal failure 7, postpartum circulatory failure 8, fetal growth restriction, etc. The disease is dangerous, and severe cases can lead to death due to cerebrovascular accident, heart failure, liver and kidney function and other multi-system organ failure. The principles of treatment for hypertensive disorders in pregnancy are rest, sedation, antispasmodic, indicated hypotension, colloid supplementation, diuresis, close monitoring of the mother and fetus, and termination of pregnancy at the appropriate time. Pregnant women should eat foods rich in protein, vitamins, iron, calcium, magnesium, selenium, zinc and other trace elements and fresh vegetables, and less animal fat and excessive salt intake, but do not restrict salt and fluid intake. Keep enough rest and pleasant mood, insist on left side lying to increase the blood supply to the placental villi. Calcium supplementation is recommended for pregnant women on a low calcium diet (intake <600mg/day, and prophylactic calcium supplementation with at least 1g/day orally is recommended for high-risk pregnant women with normal calcium intake. Patients whose blood pressure has not returned to normal at 6 weeks postpartum should have their blood pressure rechecked at 12 weeks postpartum to rule out chronic hypertension. Patients with hypertensive disorders in pregnancy, especially severe preeclampsia, are at increased risk of developing hypertension, nephropathy, and thrombosis in the distant future. Those who plan to have another child are at increased risk of recurrence of preeclampsia if the interval between pregnancies is less than 2 years or more than 10 years. Encourage patients with hypertension during pregnancy to adopt healthy dietary and lifestyle habits, such as regular physical activity, control of alcohol and salt intake, and smoking cessation. Encourage overweight patients to control their weight (BMI: 18.5-25, abdominal circumference <88 cm, to reduce the risk of recurrence in another pregnancy and to facilitate long-term health.