The veins of the lower extremities are divided into superficial veins, deep veins, traffic veins and intermuscular veins. The saphenous vein and the small saphenous vein are both superficial veins, and the blood from the saphenous vein is injected into the femoral vein through the saphenous vein valve, which is a deep vein, and the incompetence of the saphenous vein valve can lead to venous blood reflux, resulting in saphenous varicose vein. Saphenous varicose vein is a very common clinical condition that occurs in workers who are always on their feet, such as doctors, teachers and so on. The main surgical procedures for saphenous veins are high ligation and segmental stripping, in addition to varicose vein sclerosis and laser treatment. Saphenous vein surgery must be performed by high ligation and dissection of the branches of the saphenous vein, otherwise it is easy to recur after surgery.