Pregnant women with high blood pressure taking antihypertensive drugs must have an effect on the child, and it is not recommended to take any antihypertensive drugs in the first 3 months. In the first 3 months of pregnancy, the placenta is not firmly attached, and fetal differentiation is at its greatest, so antihypertensive drugs can easily lead to fetal differentiation malformations. All the drugs that have been researched and found to be in the Prilosec class or the Satan class are prohibited during pregnancy because they are prone to fetal malformations. If a pregnant woman’s blood pressure is very high and must be controlled, she can take diuretics in small doses. The main mechanism of diuretics for hypertension is to eliminate excess water, which has relatively minimal effect on the fetus.