What is diabetic old rotten feet? It is one of the chronic complications of diabetes and usually occurs in patients with a history of diabetes for more than 5 years. With the increase of diabetic population in China, the incidence of diabetic old rotten feet is increasing, which seriously affects the work and life of patients. Why do you get the disease? There is usually peripheral neuropathy, minor trauma, foot deformity, edema, ischemic lesions, callus and infection. It is a relatively difficult peripheral vascular lesion to cure, very difficult to manage, medically expensive, and painful for the patient. How to treat old rotten feet complicated by diabetes 1, systemic basic treatment: how to learn to treat old rotten feet of diabetes treatment: including blood sugar, lipid and blood pressure control. Good blood sugar control is the basis and key to treating diabetic foot. type 1 diabetes requires insulin intensive treatment measures, and type 2 diabetes also requires the use of insulin to control blood sugar as soon as possible. At the same time, appropriate antihypertensive and lipid-regulating drugs should be used to control blood pressure and lipids to the ideal range, so as to create a favorable recovery environment for the treatment of diabetic foot. Vascular lesions are one of the pathological bases of diabetic foot. If the vascular obstruction is not very serious or there is no indication for surgery, conservative treatment can be adopted, and our department adopts local hyperbaric oxygen therapy, which can rapidly improve the blood supply to the trauma surface and make the granulation tissue grow healthily. 2, the treatment of infection: diabetic foot combined with infection must be taken seriously, take active anti-infection treatment measures in recent years due to the abuse of antibiotics, more and more drug-resistant strains, should be early bacterial culture and antibiotic sensitivity test, in order to select effective antibacterial drugs. Deep infection requires surgical drainage. 3.Surgical treatment: Patients with various wounds need timely surgery after active treatment, thorough debridement, and repair of wounds with autologous skin pieces or flaps. After various treatments are unsuccessful, or if the patient’s life will be threatened without amputation, amputation is also a necessary option. According to the results of angiography or Doppler examination, the lower limb should be amputated at a lower level to maintain the function of the lower limb as much as possible. But amputation needs to be done carefully, not blindly, so as not to affect the future life, after all, amputation is not a means of treatment. When amputation is needed, basic effective treatment should also be done to avoid non-healing wounds.