Spontaneous renal rupture is a rare condition. Renal rupture most often occurs as a result of traumatic injury, a rare entity of obstructive uropathy with stones, and spontaneous causes such as malignancy. We report on a rare case of renal rupture caused by a ureter stone measuring 5 mm in size with acute pyelonephritis (APN) in a patient with renal papillary necrosis (RPN). The patient, who suffers from attacks of gouty arthritis, frequently used analgesic for pain relief. The patient was treated with temporary percutaneous drainage and antibiotics. This case demonstrates that RPN with APN can induce renal rupture even when ureter stones are small. Thus, consideration of all medical problems is important when deciding on treatment of patients with ureter stones.