The diabetic foot is a group of diseases involving multiple tissues. It can have diabetic microangiopathy, diabetic peripheral neuropathy and diabetic skin lesions, but many patients can have combined large vessel lesions, such as atherosclerotic stenosis or occlusion of the iliac and femoral arteries. Such long segments of arterial stenosis or occlusion, especially lesions of larger arteries, make vascular surgery possible. By reconstructing the stenotic or occluded segment through certain vascular surgery techniques, the purpose of improving its downstream blood flow, reducing ischemic symptoms, and promoting the prognosis of diabetic foot lesions can be achieved. There is no unanimous opinion on whether microvascular lesions should be operated and the prognosis of surgery.