There are several possible causes of swollen feet after stroke: 1, hypoproteinemia, patients often have hemiplegia and hemiplegia after stroke, need to be bedridden, reduced activity makes digestive function worse, poor feeding, often leading to malnutrition, causing hypoproteinemia, the fluid in the blood leaks outward, causing tissue edema, most obvious in the feet. 2, deep vein thrombosis of the lower limbs, occurring in the limbs of the paralyzed side, after paralysis, reduced activity, no muscle contraction, resulting in more difficult blood return. The patient has no muscle contraction, resulting in more difficult blood return, and at the same time the patient also has a variety of vascular underlying diseases, easily forming thrombosis in the deep veins of the lower extremities, resulting in obvious edema, with obvious bruising and swelling of the entire lower extremity, and higher skin temperature. 3, edema in the low hanging area, even if the patient does not form thrombosis after reduced activity, there is often edema in the peripheral space due to poor blood return, resulting in venous blood stasis. It can be relieved by elevating the lower limbs.