Diabetic foot is commonly seen in patients who have had diabetes for over ten years, often due to poor blood sugar control and inadequate care. There are three factors that lead to diabetic foot. The first is vascular factors, often accompanied by arterial stenosis in both lower limbs, leading to blood supply disorders. The second is neuropathy, accompanied by peripheral neuropathy, insensitivity to temperature and pain, which makes it easy to suffer burns and external injuries to the foot. The third factor is the presence of an infectious trigger. When these three factors combine, the risk of diabetic foot becomes very high.