With the full liberalization of the second-child policy, there is an increased demand for pregnancies in older women, many of whom are already experiencing elevated blood pressure in their preparatory pregnancies. Patients with hypertension can become pregnant, but pregnancy in hypertensive patients is prone to severe preeclampsia and multiple organ damage, leading to serious complications for mother and child. Pre-conception screening, pregnancy monitoring and intervention, and regular postpartum review should be done. 1, hypertensive patients should have a comprehensive assessment of pregnancy risk before pregnancy, and blood pressure should be controlled in the normal range before pregnancy. The main risk factors for hypertension in China are high sodium diet, overweight or obesity and poor lifestyle. Firstly, lifestyle changes should be made, and according to the range of BMI values in the Chinese population, it is recommended that patients with blood pressure controlled within 130-140/80-90 mmHg and BMI <28 kg/㎡ can be considered for pregnancy. Secondly, drug therapy can be considered. The commonly used clinical antihypertensive drugs include nifedipine and labetalol. Angiotensin-converting enzyme inhibitors and angiotensin II receptor antagonists antihypertensive drugs increase the risk of fetal teratogenicity, so pregnant women should avoid using them. 2.Increase the number of maternity checkups during pregnancy, self-monitor blood pressure, maintain emotional stability and avoid mental tension. Aspirin can be given prophylactically to improve placental blood supply from 12 weeks of pregnancy onwards under the guidance of a doctor and can be used continuously until 28 weeks. Blood pressure should be monitored at every maternity visit. If blood pressure is elevated, monitor urine protein and blood count, coagulation function, liver and kidney function and blood glucose, and if necessary, perform ECG, cardiac ultrasound and fundus examination to assess other organ involvement. Regular ultrasound review of fetal growth and development to detect fetal growth restriction in time. 3, chronic hypertensive patients with stable blood pressure control and no other complications can be induced at 39 weeks; those with complicated pre-eclampsia without serious maternal and child complications can expect to terminate pregnancy at 37 weeks; those with complicated severe pre-eclampsia and stable condition beyond 34 weeks are recommended to terminate pregnancy. When the condition is unstable and the patient is likely to have eclampsia, multi-organ dysfunction, severe fetal growth restriction, suspected placental abruption and fetal heart abnormality, the pregnancy should be terminated promptly regardless of the gestational week if no improvement is seen after active treatment. 4. Patients should have regular outpatient visits after delivery, reasonably adjust the type and dose of antihypertensive drugs, and regularly review electrocardiogram and cardiac ultrasound. Low-salt diet, regular exercise, weight control, and strengthen self-monitoring of blood pressure to reduce the occurrence of long-term complications. Before pregnancy, hypertensive patients should control their blood pressure in the normal range, comprehensively assess the risk of pregnancy, and choose the right time for pregnancy to reduce the incidence of maternal and child complications.