Abstract: ［Abstract］Objective　To evaluate temporary balloon occlusion of the abdominal aorta in high-order position sacral tumor surgical operation as a useful adjuvant technique．Methods　Reviewed 79 cases of patients from 2005 to 2015 treated in our department and the diagnosis of high-order position sacral tumor. Temporary balloon occlusion of abdominal aorta was used in 50 patients（male 29， female 21）during the sacral tumors surgical operations. The other 29 patients（male 18， female 11）with sacral tumors who received the non-temporary balloon occlusion therapy were used as control group. The statistical differences of the whole surgery time， the blood loss during the surgery， the happening of the postoperative deep vein thrombosis， the time of the postoperative extubation were analyzed. Results　The differences were statistically significant（P＜0.001）in the whole surgery time of balloon occlusion group （146.36±29.38） min vs non-balloon occlusion group（206.03±125.93） min，the blood loss of balloon occlusion group （1610.70±491.14） ml vs non-balloon occlusion group （2658.62±562.213） mL，and the time of the postoperative extubation of balloon occlusion group （6.60±2.76） d vs non-balloon occlusion group （12.52±2.86） d. However， there was not significant difference of the happening of the postoperative deep vein thrombosis between balloon occlusion group and non- balloon occlusion group. Conclusion　Temporary balloon occlusion of abdominal aorta is effective and reliable. It significantly reduced the time of operations， the loss of blood， mean days in hospital，effusion of post-operation and recurrence rate. It makes the operation of sacral tumors much more safer than before and is a technique worthy of popularizing.