We report a case of exercise-induced acute renal failure associated with renal hypouricemia in a 35- year-old man who complained of oliguria and back pain after swimming. Laboratory tests revealed that serum blood urea nitrogen and creatinine level were elevated, the serum uric acid concentration was subnormal(2.1 mg/dL). After conservative treatment, renal function was recovered. But, uric acid level decreased to 0.4 mg/dL. In addition, there was no supression of urate clearance to creatinine clearnace ratio(CUA/CCr) following the administration of pyrazinamide, and no increase of CUA/CCr after benzbromarone. Therefore, we think the cause of renal hypouricemia in this patient may be the subtotal defect in the urate transport.