Due to the cold weather, the number of diabetic patients hospitalized with various symptoms is gradually increasing, and the trend of hospitalization due to diabetes combined with foot lesions is the most obvious. Many of these patients face amputation or life threatening conditions due to the severity of their condition. The main symptoms of diabetic foot are pain in the lower limbs and skin ulcers. In the early stage, the skin of both feet is itchy, cold, white or purple skin, tingling at the extremities, numbness, and dullness or loss of sensation. When walking, the lower extremities are painful and difficult to walk, and later, the lower extremities are also painful when resting and even sleepless at night. After the combined infection, the foot ulceration, necrotic wounds do not heal for a long time, and the tendons and ligaments as well as the bone become necrotic, and the limb has to be amputated, resulting in disability. This disease is most likely to develop especially in cold weather. According to relevant statistics, in China, the incidence of diabetic foot disease accounts for about 2.6%-5.2% of diabetic patients, and the rate of amputation (toe) is about 14%. The elderly is the main incidence of the disease, we remind diabetic patients, when the above symptoms appear in the foot, must be promptly on the hospital examination. If these patients are treated properly and usually pay attention to foot care, they usually do not have serious conditions. Diabetic vasculopathy and neuropathy are the basic causes of diabetic foot. Diabetic patients are prone to injury because of the protective sensory dullness of the foot; coupled with the cold weather vascular susceptibility to lesions, blood flow supply to the foot is significantly reduced, the foot ischemic and hypoxic; and the glucose in diabetic sweat provides a good environment for bacteria, very easy to secondary infection, which forms the diabetic foot. The prevention and treatment of diabetic foot should be based on prevention, especially in winter, it is more important to raise the vigilance to prevent the occurrence of diabetic foot. First, to achieve good control of blood sugar; second, pay attention to foot hygiene, often use warm water to soak feet (pay attention not to cause burns, the water temperature of about 40 degrees Celsius). Usually wear soft leather shoes, sports shoes, to avoid through tight. Socks should be sweat-absorbing and breathable. When trimming toenails, avoid too short, causing foot injuries. For corns and any minor foot injuries and infections, they should be handled carefully to avoid the formation of ulcers or gangrene; again, pay attention to foot warmth and quit smoking, reduce blood viscosity, and take long-term enteric aspirin, compound salvia tablets and other drugs to improve blood circulation in the lower limbs.