The most common cause of urine and leg swelling is kidney disease. 1. Acute glomerulonephritis often results in decreased urine and leg swelling, combined with hematuria, proteinuria, edema, hypertension, and transient renal impairment. 2. Acute glomerulonephritis has a tendency to heal on its own, so most patients can get better on their own after rest and do not need special treatment.2. Acute renal failure, such as pre-renal, renal or post-renal factors can lead to acute renal failure. When acute renal failure occurs, the patient will suddenly have less urine or even no urine. This is the time to clarify the cause of acute renal failure, timely treatment after the symptoms of urine is expected to recover, the kidney function is expected to return to normal. 3, common is chronic renal failure resulting in less urine, leg swelling, because chronic renal failure is a long-term continuous, chronic process, so it is not through the effective way to restore kidney function, if there is a significant amount of urine less, if necessary, you can perform dialysis If the urine volume is low, dialysis can be performed if necessary.