Background temporary balloon occlusion of aorta(TBOA) can reduce autologous blood transfusion(ABT).Objective TBOA could reduce intraoperative bleeding and autologous blood transfusion, and has achieve desired effects.Content Reduce perioperative bleeding, allogeneic blood transfusion has been a problem for both the surgeon and the doctor.it is difficult to hemostasis by traditional way in special groups such as tumor,puerpera,hemorrhagic shock in trauma.Temporary ballon occlusin of aorta in prevention of bleeding during surgery and ruduce allogeneic and it will maintain a ideal operation field,ease the tension of allogeneic blood transfusion.Trend TBOA is widely used to reduce bleeding and autologous though improved.