Suddenly high blood pressure in a 29-week pregnant woman should be treated aggressively to prolong the gestational week, such as general management, antihypertensive, sedation, and promoting lung maturation. 1. General treatment: appropriate rest, maintaining adequate sleep as well as sufficient protein and calorie intake. 2. Antihypertensive: Labetalol, nifedipine, uradil, etc. can be chosen. 3. Sedation: Sedative drugs such as diazepam and sodium phenobarbital can be used appropriately to relieve the tension of pregnant women and improve the quality of sleep. 4. Promote lung maturation: If poor control of the disease is expected and the fetus will have to be delivered within a week, glucocorticoids should be given to promote lung maturation of the fetus. When a 29-week pregnant woman suddenly has high blood pressure, she should go to a regular hospital in time and choose the appropriate treatment under the guidance of a professional doctor in order to improve the quality of life of the pregnant woman and the fetus.