Arterial bridges are those in which the vessel material used in the bypass is taken from an artery, such as the internal mammary artery, radial artery, and gastroretinal artery; venous bridges are those in which the bypass material used in the procedure is a vein, most commonly the saphenous vein. Many studies have shown that saphenous bridges are far inferior to arterial bridges in terms of long-term patency rates. Approximately 10% of the bridges are occluded within 1 month of bypass surgery, 20% within 1 year, and 2% per year for 5 years thereafter, with only 50% of the bridges remaining patent 10 years after surgery. The internal mammary artery bridge, which is the most commonly used, maintains a patency rate of about 95-98% 10 years after surgery. The internal mammary artery and radial artery are the most commonly used arterial materials, which are increasingly used because of the convenience of extraction, almost the same caliber as the coronary artery, and good long-term results; the saphenous vein is the most commonly used venous graft material because of its wide source and convenience of extraction. The mechanism of venous bridge occlusion is mainly thrombosis in the early stage, with gradual intimal thickening and fibrosis in the later stage, and mainly atherosclerosis in the late stage. The advantages of arterial bridges are that they are less likely to be atherosclerotic, their diameter can be self-regulated according to blood flow, and they have a high long-term patency rate. Of course, the choice of arteriovenous material for each patient depends on the specific situation. Generally, we try to use arteriovenous bridges as much as possible to maintain a good long-term patency rate and to improve the long-term outcome of the patient.