Most women may experience an increase in blood pressure during pregnancy, which can develop into gestational hypertension in severe cases. Patients with previous hypertension and unstable blood pressure control are more likely to have high blood pressure during pregnancy, which can cause uterine ischemia and fetal asphyxia. Therefore, hypertension puts pregnant women in a dilemma: taking antihypertensive drugs for fear of affecting or even harming the fetus, and not taking them for cardiovascular risks. In fact, the principle of treatment for women with hypertension during pregnancy is not to stop using antihypertensive drugs at will, but the type and dosage of antihypertensive drugs used should be adjusted. As long as they are properly controlled, mothers-to-be with hypertension can pass through this special period without any problems. If a woman with hypertension is planning to have a child, she must prepare well in advance by first keeping her blood pressure under control before considering pregnancy. It is very important to stabilize the blood pressure in advance, not only to reduce the risk of pregnancy, but also because the first three months of early pregnancy have the greatest impact on the fetus and are the most teratogenic. If the patient can control the blood pressure better before conception, the dosage of antihypertensive drugs in the first three months of pregnancy can be reduced under the guidance of the doctor, and in some cases, the drugs can even be temporarily not used, thus minimizing the side effects of the drugs on the fetus In some cases, the medication can even be temporarily stopped, thus minimizing the side effects of the drug on the fetus. For this special group of people, it is generally recommended to use long-acting calcium antagonist antihypertensive drugs, which have the effect of inhibiting uterine contractions while lowering blood pressure, and are more suitable for patients during pregnancy, and can be taken only once a day to control blood pressure smoothly for 24 hours. Other types of antihypertensive drugs generally have an impact on the fetus, such as beta-blockers that inhibit the fetal heartbeat, angiotensin-converting enzyme inhibitors that affect the normal development of the fetal adrenal system, and only calcium antagonists that have the least negative impact on the fetus. During pregnancy, women with hypertension should take antihypertensive medication according to the doctor’s instructions and pay special attention to regular blood pressure monitoring. As far as possible, blood pressure should be taken once a day in the morning and once in the evening, and a record of blood pressure and abnormalities should be kept and provided to the doctor during monthly visits to the cardiovascular physician in order to make timely adjustments to the treatment plan.