Folic acid tablets alone have no effect on patients with hypertension, but there is a group of hypertensive patients with increased homocysteine >10 μmol/L. Such patients are called hypertensive combined with hyperhomocysteinemia, and such patients are called H-type hypertensive. These patients have a high probability of developing cerebrovascular disease and can be treated with folic acid tablets to lower homocysteine. One of the commonly used clinical drugs is Enalapril folic acid tablets, also known as etanercept. Taking this drug can lower both blood pressure and homocysteine, killing two birds with one stone, which has a very good effect of lowering blood pressure and protecting cardiovascular blood vessels. So patients who do not have high homocysteine can not take folic acid tablets, and patients with homocysteine higher than 10 μmol/L. have a high probability of cerebrovascular disease and should be treated with folic acid tablets in combination with blood pressure lowering.