Diabetic foot is a chronic complication of diabetes, characterized by arteriosclerosis, narrowing, and occlusion of the lower limb vessels, and peripheral neuropathy caused by multiple factors following diabetes. Treatment mainly involves improving circulation and nourishing nerves, including performing lower limb arterial ultrasound to assess the extent of vascular occlusion. When necessary, stenting or vascular recanalization can be performed, and treatments including stem cell therapy are also viable options. For pain, severe pain can generally be managed by vasodilation and symptomatic treatment.