Swollen feet at 37 weeks of pregnancy is a relatively common symptom. As the fetus grows more obviously in the second trimester, the uterus enlarges, which will compress the inferior vena cava and lead to obstruction of return flow, and the phenomenon of swollen legs or swollen feet will appear. You should try to pay attention to rest, do not overwork, and do not stand or sit for a long time, because the feet droop is not conducive to blood circulation, which will aggravate the phenomenon of swollen feet, usually try to put the legs flat, can relieve the symptoms. During this period also need to pay attention to a light diet, low salt, low fat diet, do not eat too greasy food. If the blood pressure is too high, the phenomenon of swollen feet is also likely to occur. It is necessary to measure the blood pressure in time, observe the changes in blood pressure and carry out symptomatic treatment. If blood pressure is too high, blood pressure can be controlled with antihypertensive drugs to reduce the symptoms of edema.