Conclusion The surgery to thoracic aneurysm is safe and satisfactory for patients with De Bakey type ⅲ aortic dissection, the appropriate operative techniques and methods of spinal cord protection are essential to resolve this problem. 结论胸主动脉瘤的手术效果满意。加强DeBakeyⅢ型动脉瘤的认识,选择适宜的手术及脊髓保护方法仍是工作的重点。