In addition to harming the heart, brain, kidneys and other important internal organs, diabetes is also quite harmful to the lower extremities. According to statistics, more than one tenth of diabetic inpatients have insufficient arterial blood supply to the lower extremities, including cold feet, painful toes, loss of pulse, toe ulcers, blackening and necrosis of the feet spreading upward, collectively known as “diabetic foot”, which can lead to amputation or death if not treated properly. In the treatment of diabetes mellitus, in the past, the basic conservative treatment is based on internal medicine, and there are not many ways to deal with the ischemic complications of the lower limb arteries caused by it, and the effect is also poor. Many diabetic foot had to be cut off. In recent years, with the continuous progress of vascular surgery technology, promising progress has been made in the surgical treatment of diabetic foot, and the limb preservation rate is much higher than before. So, how does the use of vascular surgery methods preserve the limb? The basic principle of surgical treatment of the diabetic foot is to find ways to restore the blood supply to the distal part of the lower extremity (foot). The main types of surgical methods include the following: Type I, minimally invasive surgery: direct percutaneous puncture, introducing catheters to dead etc. into the blood vessels and using manipulation to open up the narrowed or blocked arteries. The arteries that diabetes likes to invade the most are the vessels of the lower legs. Early lesions are often localized segmental stenoses, which can be opened up using balloon dilation or additional stent implantation to restore normal vessel caliber and thus restore blood supply. This method requires no incision and is accomplished by puncture alone, making it a minimally invasive and effective treatment method. In addition, diabetic patients are mostly accompanied by atherosclerosis, so many large arteries also become narrowed or even occluded, and the minimally invasive advantages of this method are reflected more. The disadvantage is that because the caliber of the calf artery is relatively thin, it is easy to re-stenosis over time. By the middle and late stages of the disease, long segments of stenosis often appear. At this point, although multiple stents can be implanted in succession to open the vessel, the reocclusion rate is high and the cost is also greater. In addition, some mechanical spinning devices, such as ultrasound ablation devices, can be used to open the occluded segment, but the disadvantage is that it is also prone to recurrent stenosis. The second type is bypass surgery, commonly known as bypass surgery: that is, artificial blood vessels or blood vessels from other parts of the body are used as grafts, or “bridges”, and the two ends are anastomosed to the normal blood vessel wall outside the stenotic or occluded segment, so that the blood flow is bypassed to the distal end of the lower extremity, restoring blood flow to the lower extremity. This is a traditional vascular surgery method that has been used for decades for atherosclerotic occlusive disease. In recent years it has been found to have good limb preservation results for diabetic foot as well. The disadvantage is that because the blood vessels are relatively thin, there is a certain percentage of reocclusion after several years. The third type of surgery is arterialization of veins: it is to divert blood from arteries to veins in the lower extremities, and to transport arterial blood to the feet by using the existing “pipeline”. The disadvantage is that some patients may experience swelling of the lower extremities. The fourth category, other surgeries: mainly lumbar sympathectomy, large omental transplantation, etc., are less commonly used. According to the different stages of diabetic foot development, the above-mentioned various surgical methods can be flexibly selected, using a single or combined application of the program. In recent years, vascular surgeons have not only mastered traditional open surgery techniques, but also mastered fine catheter guidewire minimally invasive techniques, and can use the unique advantages of various techniques to apply to multiple lesions at different sites, called hybrid surgery or compound surgery, to achieve the effect of reconstructing blood channels in lower limbs, improving blood supply to lower limbs, alleviating symptoms, reducing the scope of limb necrosis, avoiding amputation and preserving limbs with the most minimally invasive techniques The procedure is a very effective way to improve the quality of life of patients.