Swelling in pregnancy may be caused by hypertension in pregnancy, heart disease, severe anemia, etc., and need to be given cardiac, diuretic, antihypertensive and other treatments. 1. Pregnancy hypertension: pregnant women in pregnancy in the late stages of pregnancy if the complication of gestational hypertension, the disease is prone to cause double lower extremity edema, elevated urinary protein, at this time you need to give antihypertensive (nifedipine), antispasmodic (magnesium sulfate) and other treatments. 2. Combined heart disease in pregnancy: pregnant women with heart disease in pregnancy, such as mitral stenosis, right heart failure, etc. are also prone to cause edema, sedentary breathing and other symptoms. At this time, it is necessary to give strong heart (digitalis, etc.), diuretic (furosemide) and other treatments. 3. Severe anemia combined with pregnancy: If severe anemia is caused by thalassemia or iron deficiency anemia, general edema, dizziness, fatigue and other discomforts may occur. At this time, it is necessary to give blood transfusion or take drugs (iron dextrose dispersible tablets) to correct anemia. Pregnant women should pay attention to regular maternity checkups during pregnancy, and if edema occurs, they must go to the hospital as soon as possible to find out the cause of the disease and treat it as soon as possible, rather than blindly using medication on their own.