Uremia is the end stage of chronic renal failure, uremic patients with swollen feet can be caused by the following causes, the following specific analysis: 1, water and sodium retention caused by uremic patients with little or no urine, excess water in the body can not be discharged, so the body caused by water and sodium retention and edema of the feet, or even swelling and other symptoms. 2, gout, uremic patients with elevated uric acid, when patients are prone to gout, with swollen feet, pain, and even can not get out of bed. If a patient with uremia has swollen feet on one side and normal feet on the other side, the possibility of blood clots in the lower limbs should be considered, and a lower limb vascular ultrasound can make a clear diagnosis.