With the improvement of domestic living standards and changes in dietary habits, there are more and more patients with diabetes, of whom 15% will have diabetic foot, which is one of the most serious complications of diabetes, and the diabetic foot is not unfamiliar to clinicians. Because the sclerosis of these limb arteries is extensive and the occlusion is often multi-stage or long segment, it brings great difficulties to the treatment of clinical vascular surgeons, and the rate of limb preservation by drug treatment is very low; the indications for surgical treatment are too narrow, and many patients are not suitable for surgery or cannot tolerate surgery because of their age and many complications, so the diabetic foot once became the largest disease of non-traumatic amputation, and statistics show that the diabetic foot accounts for 85% of non-traumatic amputation, which seriously endangers the This has seriously endangered people’s health. The Interventional Endovascular Technology for Diabetic Foot was introduced from abroad at the beginning of the 21st century and has attracted wide attention in the domestic medical field. It can be said that the interventional endovenous technology has opened a new chapter in the treatment of diabetic foot. Statistics show that the limb preservation rate of diabetic foot was 66% when the interventional treatment was not carried out, but now it has reached 96% with the application of this technology, and millions of patients have gained from it and preserved their limbs. Interventional endoluminal therapy includes PTA (percutaneous transluminal angioplasty) and STENT (stenting) techniques, which involves entering the vascular cavity through a skin puncture, passing a guidewire through the narrowed or occluded arterial lesion, and then reopening the artery through balloon shaping and stenting to restore blood flow. There are many advantages of interventional treatment: 1. High success rate of treatment: statistics show that the success rate of interventional treatment is 85% to 90%, 2. Low risk of interventional treatment and few complications: the mortality rate of interventional treatment is almost 0%, and the main complications such as bleeding and vascular entrapment are significantly reduced with the improvement of the operator’s technique, and the chance of serious consequences due to related complications is extremely small. 3, high rate of limb preservation after treatment: according to statistics, the amputation rate of patients treated with intervention is only 4%, and the amputation plane is significantly reduced, while the amputation rate of patients who do not take active treatment is as high as 33%, mostly high amputation. 4.Operation can be repeated: In case of restenosis and occlusion of blood vessels, interventional treatment can be easily repeated and is equally safe and effective. 5.The treatment effect is obvious: after the interventional treatment, the clinical symptoms of most patients can be relieved rapidly and the healing of ischemic ulcers can be promoted. 6.It is the most effective method for treating diabetic foot: for the frequent occlusion of blood vessels below the knee in diabetic foot, the patency rate of vascular bypass surgery is low, and drug treatment cannot reverse the ischemic lesions caused by vascular occlusion, only interventional treatment can directly reconstruct the blood flow in the lower leg through the method of intravascular lumen opening and increase the blood perfusion in the foot to achieve the purpose of relieving the ischemia of the lower limb. 7.Truly minimally invasive treatment: compared with the highly invasive open surgery, interventional treatment can be performed by puncture only, and recovery after treatment is fast. 8.Interventional treatment only requires local anesthesia, with little side effects and no various complications of general anesthesia, which is more suitable for old and frail patients.