1.Conservative treatment Lower extremity atherosclerosis occlusive disease is the local manifestation of systemic atherosclerosis in the lower limbs, is a systemic disease, and coronary heart disease and cerebral infarction conservative treatment methods, namely: ① strict smoking cessation; strict control of blood pressure, blood glucose, lipids, etc., and active diagnosis and treatment of cardiovascular and cerebral vascular disease may be potential. ② Adhere to walking exercise, promote the establishment of lower limb collateral circulation; pay attention to the protection of the foot to avoid skin damage, burns, etc.. ③Drug therapy: antiplatelet drugs such as: Bay Aspirin enteric-coated tablets, clopidogrel (POLIVI), etc.; vasodilator drugs such as: Anbulec, bei prostaglandin sodium tablets, cilostazol and so on. 2.Surgery Lower limbs with severe intermittent claudication, rest pain, ulceration or gangrene should be operated as soon as possible to rebuild the arterial blood flow and improve the blood supply to the limbs. ① Percutaneous endoluminal angioplasty/stent implantation: it is a popular minimally invasive treatment method: puncture through the artery, delivery of balloon catheter to the narrowed or occluded part of the arteries of the lower limbs, expanding the lumen of the artery, and often needing to place the endoluminal stent in order to get a better therapeutic effect. This technique used to be applied only to stenotic lesions < less than 5 cm stenosis > stenosis lesions, with the advancement of interventional techniques, now for long segments of occlusive lesions can also be successfully opened. ② endarterectomy: for short-segment aortic and iliac artery stenosis or occlusion of arterial lesions, due to the development of interventional technology, is now used as an adjunctive surgical method of arterial bypass grafting in order to expand the lumen of the vessel. Arterial bypass (bypass grafting): the application of autologous saphenous vein or artificial blood vessels, respectively, anastomosis in the occluded arteries proximal and distal normal arteries between the establishment of bypass. Preoperative photo of diabetic footPostoperative photo of diabetic foot