Stroke patients with edema of the feet need to consider the following reasons: 1, deep vein thrombosis of the lower extremities, such patients need to routinely elevate the lower extremities, and at the same time, need to improve the lower extremity venous ultrasound and plasma D-dimer test, to rule out the existence of lower extremity venous thrombosis. 2, cardiogenic edema, if the heart function is not good may cause edema of the feet of the lower extremities, so you need to improve the ultrasound cardiology and BNP test to rule out the existence of cardiogenic edema. 3, renal edema, if renal insufficiency may also appear edema. If the heart is not functioning well, it may cause lower limb edema, so it is necessary to complete the cardiac ultrasound examination and BNP examination to exclude the existence of cardiogenic edema. 3, renal edema, if the renal insufficiency may also appear lower limb edema. 4, we also need to consider whether it is combined with nutritional deficiencies in edema, and we need to test biochemical examination to clarify whether there is hypoproteinemia.