A case of acute ergotism with angiographic demonstration of bilateral femoral artery involvement is reported. A 27-year-old married woman was admitted because of sudden onset of severe pain in both flanks and lower leges, followed by numbness and coldness of the skin on both legs. The attack occurred after the administraton of ergot tartrate as postpartum care. Femoral arteriography was performed on 10th day of illness with the seldinger technic. THe femoral arteries were generally smaller in caliber than normal. There was no definite evidence of occlusie disease. Findings were more or less symmetrical and extended to lower legs where only fine branches were visualized. The final diagnosis was diffuse vasospasm due to acute ergotism with secondary occlusion of the arteries of lower leg bilaterally.