In patients with cerebral thrombosis, if swelling of the feet occurs, it is usually in the limb on the paralyzed side. Deep vein thrombosis in the lower limb on the paralyzed side is the most common cause, and patients will be found to have significant swelling of the lower limbs, red or purple skin color, and elevated skin temperature on palpation. A complete ultrasound examination of the lower extremity vasculature can reveal deep vein thrombosis, or intermuscular vein thrombosis. This kind of thrombus, if dislodged and returned to the lungs, may cause pulmonary embolism, leading to the death of the patient, so it is a very serious complication. The principle of treatment is to elevate the patient’s lower limbs to help blood return. If there is no contraindication, low molecular heparin can be injected subcutaneously, 4000 units once, twice a day. And ask for a vascular surgery consult to see if there is an indication for placing an abdominal aortic stent to intercept the clot. There are other causes of swollen feet, such as hypoproteinemia, which is common in malnourished patients, where the patient will have simultaneous swelling of both lower extremities, with marked induration and slightly pale skin, unlike deep vein thrombosis. This condition should be actively supplemented with protein, either oral protein powder, or intravenous infusion of albumin, to increase the protein content of the diet, for example, you can eat milk, eggs, meat and so on.