After successful puncture of the left femoral artery, a short 6F arterial sheath was placed and a 5F pigtail catheter was placed in the superior segment of the abdominal aorta, and a high-pressure syringe angiogram showed >70% severe stenosis at the beginning of both renal arteries, and it was decided to perform left renal artery stenting. A 0.035” 260 cm long superslip guidewire with a Cook long sheath and a vertebral artery catheter was used to try to pass through the stenosis of the left renal artery, but was unsuccessful. The long Cook sheath was replaced with a short 8F sheath, and an 8F Guiding catheter (Cordis, RDC(I)) was placed, and the stenosis of the left renal artery was successfully passed with a superslip guidewire and a vertebral artery catheter. After Guiding catheter imaging and measurement, a 6 mm-24 mm ball expansion stent (Cordis, G enesis RX) was delivered through the Guiding catheter to the stenosis and released (maximum pressure 10 atm) after manual pushing and positioning. The Guiding catheter and guidewire were withdrawn and the short sheath was retained, and the patient was returned to the ward. The patient’s condition was stable without any special discomfort during the operation, and about 100 ml of contrast agent was applied; the intraoperative bleeding was small, about 30 ml.