Peripheral vascular diseases include arterial diseases, venous diseases, and arteriovenous fistulas. Examples include atherosclerotic occlusive disease, arterial embolism, and chronic venous insufficiency of the lower extremities. Peripheral vascular refers to vascular diseases other than craniocerebral and cardiac vascular circulation, mainly involving the following diseases. 1. Arterial diseases: including atherosclerotic occlusive disease, thromboembolic vasculitis, arterial embolism, polyarteritis, Raynaud’s syndrome, peripheral aneurysm, visceral aneurysm, abdominal aortic aneurysm, etc. 2. Venous diseases: including chronic venous insufficiency of lower limbs, deep vein thrombosis, etc. 3. Arteriovenous fistula: including congenital arteriovenous fistula and injurious arteriovenous fistula. Patients with peripheral vascular disease should take medication on time, have regular checkups, and consult a doctor in time if they have any discomfort.