We report the morphological findings of a case of horse shoe kidney and analyze the size and position, renal hilum, vascular and calycealsystems of the kidney. The horse shoe kidney of our case fuses lower pole below inferior mesenteric artery with parenchymal tissue. Larger area of left hilum than right both face anteriorly. They consist of extra renal calyxes. The kidney was supplied by six arteries and drained by three veins. We discussed morphologic and embryonic importance of the anomaly.