Objective:To study the treament of arterial occlusion of lower extrimities. Methods:Seventythree cases(78 limbs) of chronic ischemia of lower extremities were diagnosed as artroial occlusion by color ultrasounography, DSA or MRA. Arterial bypass using grafting,endarterectomy and percuteneous transluminal angioplasty (PTA) were used for the artery segmental occlusion in 44 limbs. Venous arterialization and reconstruction of profunda femoris were performed for extensive occlusion in 29 limbs. Results:All the cases showed satisfactory results 6 months to 8 years after operation except 8 limbs (segmental occlusion in 3 limbs and extensive occlusion in 5 limbs) were amputated. Conclusions:The key points of improvement of the therapeutic effects of the arteral occlusion of lowe extremity lie on the choice of the therapeutic methods accoding to the results of DSA or MRA.