In a 35 year old arteriogenic impotent patient without a history of hypertension, arteriosclerotic disease, or diabetes mellitus, the corpus cavernosum of the penis was revascularized using Hauri's method. Before surgery, erection after the intra-cavernous injection of 20 micrograms of prostaglandin E1 was very weak. In a color ultrasonography the peak systolic velocity of the cavernous arteries was recorded as being only 18 cm/sec. Furthermore, no artery except the right dorsal artery was evident even with a digital subtraction angiography. Accordingly he was diagnosed as having arteriogenic impotence, and we carried out the corpus cavernosum revascularization using Hauri's method under microscopic magnification. The dorsal artery and the deep dorsal vein were anastomosed side-to-side, and the hypogastric artery and dorsal artery were anastomosed end-to-side. After the revascularization surgery, the peak systolic velocity of cavernous arteries returned to normal (53 cm/sec), and the penis showed complete erection after an intracavernous injection of 20 micrograms of prostaglandin E1. Before surgery this patient had no experienced sexual intercourse, but he could achieve full sexual intercourse 2 weeks after the surgery. His erectile ability has been maintained for 4 months since the surgery. This is the 1st case of arteriogenic impotence treated using Hauri's method in Japan.