Low blood pressure in pregnant women mainly depends on whether it has induced other combined symptoms, such as fatigue, chest tightness, shortness of breath, or even fainting, if there are no uncomfortable symptoms can not be given treatment, and will not cause too much impact on the pregnant woman and the fetus. If dizziness, fatigue, chest tightness, panic, or even fainting occurs, treatment should be given. First of all, to rule out postural hypotension, patients with postural hypotension should avoid prolonged standing or rapid standing and other actions, usually can do some adaptive exercise, such as squatting, standing, start slowly not too fast, gradually increase the amount of exercise. And to eat on time to maintain adequate sleep, do not overstarvation, if the blood pressure is really low, especially systolic blood pressure is less than 70mmHg, diastolic blood pressure is less than 45mmHg should go to the hospital, accept the doctor’s guidance. Low blood pressure in pregnant women can be divided into physiological low blood pressure and pathological low blood pressure. Physiological low blood pressure, sometimes with insufficient rest or prolonged standing, as well as insufficient sleep and overwork, can be corrected through physiological adjustment and correction of bad habits in daily life to achieve corrective effects. If pathologic hypotension, such as allergy, shock and cardiovascular disease caused by low blood pressure, this case is pathologic hypotension, need to carry out etiological treatment. Fetal distress, fetal dysplasia, and even miscarriage can occur in severe cases of hypotension in pregnant women, and spontaneous injuries, such as falls, may occur in pregnant women who experience syncope.