Angiology is the study of diseases of the human vascular circulatory system (including arterial, venous and lymphatic systems). Simply put, it is the study of vascular diseases of the human body as a whole. In the past, vascular diseases that posed serious risks to the human body were mainly cardiac diseases (e.g. myocardial infarction) and intracranial vascular diseases (e.g. cerebral infarction, cerebral hemorrhage), so hospitals above the second-tier level had relatively independent departments dealing with cardiac vessels (cardiology or cardiac surgery) and intracranial vessels (neurology or neurosurgery), but as the incidence of cardiovascular diseases increased and awareness of such diseases improved, peripheral vascular diseases gained attention and vascular surgery gradually developed. peripheral vascular disease gained attention, vascular surgery gradually developed. Vascular surgery is an emerging surgical specialty. In foreign countries, vascular surgery has long been an independent discipline, distributed in various general and specialized hospitals. At present, in most domestic hospitals above the provincial level, vascular surgery has gradually become an independent discipline, while in city and county hospitals, vascular surgery is mostly scattered attached to various specialties. For example: head and neck vessels by neurosurgery, chest vessels by thoracic surgery, vascular trauma by orthopedics, renal vessels by urology, viscera and other vessels by general surgery. The main mission of vascular surgeons is to treat arterial and venous diseases throughout the body using effective and safe methods. It can be considered that, except for intracranial vascular diseases and cardiovascular diseases, vascular problems in any part of the body belong to the scope of treatment of vascular surgeons. These diseases basically include: 1. Arterial diseases: mainly arterial dilatation or arterial obstructive diseases Common dilatation diseases include: thoracic aortic aneurysm, aortic coarctation, abdominal aortic aneurysm, iliac aneurysm, N aneurysm, splenic aneurysm, and visceral aneurysm. Common obstructive diseases include: acute arterial embolism, carotid stenosis, lower extremity atherosclerotic occlusion, thrombo-occlusive vasculitis, and diabetic foot. 2.Venous diseases Common ones are: saphenous varicose vein, lower extremity deep vein thrombosis, Buga syndrome, cockett syndrome. 3.Other common ones are: arteriovenous fistula, vascular malformation (hemangioma), arteriovenous fistula for dialysis, and infusion port implantation for chemotherapy maintenance. For the above vascular related diseases, early help should be sought from a professional vascular surgeon who will make every effort to provide a full range of solutions and strategies in accordance with the principles of individualized treatment.