Swollen feet after delivery can be divided into physiological causes as well as pathological causes, pathological causes usually include anemia, gestational hypertension, kidney disease, etc. Specific analysis is required: I. Physiological causes: 1. Increased blood volume: due to increased blood volume during pregnancy, the body circulates more water, resulting in swollen feet, which is a legacy of pregnancy, will gradually return to normal with the discharge of a large amount of sweat in the puerperium, usually It lasts 1-2 weeks; 2. Long time standing: If the mother stands for too long, it will lead to poor circulation and poor reflux in the lower limbs and swelling of the feet. 2. Pathological causes: 1. anemia: the mother loses a lot of blood due to childbirth and becomes anemic, at this time, the water in the blood vessels leaks out to the outside of the vessels and gathers in the tissue interstitial space, causing edema, which can be manifested as foot edema or facial edema; 2. hypertensive disease during pregnancy: the mother who suffers from hypertension during pregnancy may still have high blood pressure due to the fact that she has not yet recovered after childbirth, and foot edema appears, at this time, she needs to go to the hospital 3, kidney disease: if the mother has chronic nephritis, hypoproteinemia and other conditions, it will lead to changes in the internal environment, which will lead to foot swelling; 4, other: in addition to the above, it may also lead to foot swelling due to heart and liver diseases, or venous thrombosis of the lower limbs, inflammatory changes in the veins and other conditions. When maternal foot swelling occurs, the swelling can be relieved by elevating the lower limb or moving the ankle, i.e. ankle pump exercise, to promote reflux. If the above methods do not improve or other symptoms appear, you should go to the hospital promptly to find the cause and treat the cause.