Diabetic feet are particularly susceptible to vascular and neurological lesions, which interact with each other to cause a range of clinical foot conditions, including toe disease, callus formation, skin damage and foot ulcers, and musculoskeletal lesions leading to foot deformities. Diabetic patients are often susceptible to trauma due to loss or reduction of sensation in the foot as a result of neuropathy, and minor trauma can quickly lead to ulceration, infection, and gangrene, which can eventually necessitate amputation. Diabetic foot is one of the common chronic comorbidities of diabetes, and is also the main cause of amputation and disability in diabetic patients. One of the newest methods is to do a lumbar sympathetic block or disruption (depending on the severity of the condition) with a “needle” in the lower back. It is used to treat diabetic foot. The common symptoms are malnutrition of the lower extremities and feet, rough skin, no sweating, cold feet, coldness, darkening and lack of luster, brittle toenails, numbness in the glove-like distribution of the lower legs, abnormal sensation, soreness in the feet and lower legs, weakness in walking, intermittent claudication, ulceration of the feet, and even necrosis of the toes or feet. The treatment principle is that the blocked or destroyed sympathetic nerve in the lumbar region can dilate the blood vessels of the lower extremity, improve the ischemic state and nutritional state of the lower extremity, promote the establishment of collateral circulation, promote blood return to the lower extremity, eliminate edema, reduce or eliminate the nerve entrapment, and promote the recovery of the damaged nerve. By improving the function of microvasculature, it serves to regulate metabolism to correct nerve ischemia and hypoxia and increase nerve conduction function. By blocking the uploading of undesirable information, the patient will no longer have numbness, tingling, burning and other unusual sensations in the affected limbs, which will greatly help to improve the patient’s poor state of mind.