Swelling of the legs of pregnant women depends on what causes it, and needs to be treated according to different causes in order to improve. Pregnant women when there is a lower extremity venous compression resulting in obstruction of blood return, and the symptoms are mild, usually disappear on their own, but also can be improved by massaging the lower extremity pads. If the edema is caused by long time walking or standing, the symptoms can be improved by resting more and lying on the left side. If the pregnant woman is pregnant with kidney disease, hypertensive disorders of pregnancy caused by lower limb edema, through massage can not be improved, should be hospitalized, in obstetricians, nephrologists under the guidance of standardized treatment. Double lower extremity edema in late pregnancy is a common symptom of pregnant women, should avoid sitting for a long time, long battle, through the tight clothes or socks, but also through the wear of medical compression stockings, appropriate exercise, left lateral position, etc. to improve, if the edema is obvious, should be as soon as possible to the hospital to exclude the pathological causes.