Cold legs and feet can be caused by many reasons, which can be seen in the cold climate and other life factors, and can also be a symptomatic manifestation of a certain disease, such as diabetic foot, thromboembolic vasculitis and so on. 1. Cold climate: rainy days or a sudden change in climate, while wearing too little clothing, may lead to cold stimulation of the legs and feet, and cold legs and feet, cold. 2. Diabetic peripheral vasculopathy: it is the narrowing and occlusion of the lumen caused by vasculopathy in the lower limbs of diabetic patients, resulting in poor blood circulation, which can be seen as a drop in skin temperature, cold legs and feet, and other symptoms. 3. Thromboembolic vasculitis: it is a kind of chronic cyclic attack of vascular inflammatory lesion, which can be caused by smoking, cold stimulation and other factors. The main symptoms can be seen in the affected area, such as reduced skin temperature, soreness and swelling. If you find cold legs and feet, you should immediately go to the hospital, hospital-related examinations to clarify the cause of the disease, and actively cooperate with the doctor’s treatment.