Most women with gestational hypertension return to normal 12 weeks after delivery, urine protein will decrease and edema will disappear. Gestational hypertension occurs after 20 weeks of gestation, when the blood pressure exceeds 140/90 mm Hg. When the blood pressure is persistently greater than 150/100 mm Hg, antihypertensive treatment should be administered, and in cases of severe preeclampsia and eclampsia, magnesium sulfate should be used along with antihypertensive treatment. The aim of treatment is to reduce the perinatal risk and mortality of mother and infant and to improve the prognosis of mother and infant. Since the use of antihypertensive drugs during pregnancy can easily be absorbed by the infant through the placenta and cause teratogenic effects, it is important to use antihypertensive drugs strictly according to medical advice. In addition, patients with hypertension still need to take oral antihypertensive drugs before discharge from the hospital, monitor blood pressure regularly, and adjust the dosage of antihypertensive drugs. In conclusion, patients with hyperemesis should have a low salt and low fat diet as well as a high protein and high calcium diet after delivery. Urine protein and blood pressure should be rechecked regularly to exclude kidney disease and blood pressure should be rechecked again at 12 weeks to exclude chronic hypertension.