The diabetic foot is one of the serious complications of diabetes and is increasingly threatening the health of people’s legs. According to statistics, 20% of diabetic patients will experience a diabetic foot during the course of their disease, and 33% will face amputation due to lower limb ischemia. For patients aged 65 to 74 years, combined diabetes increases the risk of amputation by 20 times. Diabetic foot, a syndrome that includes abnormal sensation in both feet, foot ulceration and even necrosis, occurs in diabetic patients. Because diabetics usually have a significantly reduced sense of pain, this type of disease is relatively insidious and often easy to ignore. By the time significant pain or a long-lasting ulcer appears, the condition is usually severe, treatment becomes more difficult, and the risk of amputation is significantly higher. In diabetic patients, the various symptoms caused by ischemia in the foot due to decreased skin sensation are usually not obvious. In general, the main manifestations are the following: numbness and coldness in the legs and feet at rest, or different hot and cold temperature sensations in both lower limbs, loss of hair on the legs and/or feet, little or no sweating on the skin of the affected limbs; change in foot color, pale or blue (cyanotic) feet; leg pain or intermittent claudication after exercise (e.g. walking), relieved by rest; muscle pain in the lower limbs with tingling or burning sensation, resting pain; limb The pulse is weakened or disappeared; abnormal walking gait; deformity of the foot; in severe cases, ulcer formation, infection and even gangrene in the lower limbs, which is life-threatening. The treatment of diabetic foot is the earlier the better. Once cold feet appear, there are already indications for treatment. The earlier the degree of vascular obstruction is relatively mild, the greater the chances of possible successful cure. Also, with early treatment, the patient’s feet may not have significant ulcers or necrosis, and the faster the recovery after treatment. Nowadays, it has become routine for diabetic patients to pay attention to the health of their feet, thus also allowing them to have a healthy pair of legs even in their old age.