Double lower extremity atherosclerotic occlusive disease is a chronic disease in which atherosclerosis involves both lower extremities, leading to stenosis or occlusion of the arteries of both lower extremities, thus causing ischemia of both lower extremities. The etiology of double lower limb atherosclerosis occlusion is still unclear, but it is generally believed that atherosclerosis formation is related to endothelial damage, lipid metabolism disorders in the arterial wall, hemodynamic changes in arterial bifurcation, etc., and there are a variety of risk factors, such as age, smoking, hyperlipidemia, hypertension, diabetes mellitus and so on. In the early stage of the disease, there are no obvious symptoms, or only coldness, numbness and weakness of the affected limbs. With the progress of the disease, intermittent claudication can gradually appear, manifested as normal walking will induce pain in the affected limbs, after resting and can continue to walk, but the pain can re-emerge, and gradually aggravated by rest pain (i.e., pain in the limbs at rest), and finally even ulcers, gangrene and other symptoms. Therefore, if there are cold feet, numbness, etc., it is recommended to consult a doctor in time, with the help of a doctor to clarify the diagnosis and standardize the treatment, so as to avoid the occurrence of limb necrosis and other serious complications.