Blood vessels are usually broken by trauma. small arteries and veins can be surgically ligated, but large veins or arteries require revascularization. 1. debridement and cleaning of the already contaminated or necrotic part of the broken end of the vessel should be performed so that the endothelium of the vessel is ectopically sutured. If there is a large defect in the vessel, an artificial vessel should be used instead. If there is a small defect in the vessel, the continuity of the vessel can be restored by using an autologous saphenous vein graft.2. After the endothelial ectasia, the vessel can be sutured continuously with a non-invasive vascular suture to restore the continuity of the vessel for smooth blood flow, and postoperative anticoagulants can be used to prevent thrombosis until the severed end of the vessel is completely healed.