Knowledge of the renal arterial and venous anatomy is an essential to the renal trasplantation. Followings arethe results from analysis of the renal artery and vein in 85 candiates of renal trasplant dornor. 1. Bilateralsingle renal artery was 70.6%. 2. Double renal artery was 18.8%, and single renal artery associated with accessoryartery was 10.6%. 3. Extrarenal bifurcation of the single renal artery was 70.0%. 4. Average length of the singlerenal artery was 40mm of right renal artery and 33 mm of left renal artery. 5. Level of the origins of both renalartery from abdominal aorta was as follows: Same level of both renal arteries was 50.0%, right renal artery washigher than left in 36.7%, and left was higher in 13.3%. 6. Bilateral single renal vein was observed in 84.7%, andremainder was double renal vein and 1 case of triple right renal veins. 7. Nut cracker phenomenon was observed in22.6%. 8. Extrarenal confluence of lobar renal viens was 20%. 9. In 3 cases, nutcracker phenomenon was associatedwith extrarenal confluence of lobar renal veins. 10. Inferior adrenal artery was not opcified in 36.5% of renalarteriogram.