报告外科治疗胸主动脉瘤９例，男６例，女３例。９例中马凡氏综合征升主动脉瘤伴主动脉瓣关闭不全３例，主动脉弓动脉瘤２例，主动脉峡部囊性动脉瘤２例和假性动脉瘤１例，以及胸主动脉夹层动脉瘤（ＤｅＢａｋｅｙⅢ型）ｌ例。手术死亡１例，死亡率１１．１％。作者对胸主动脉瘤的临床表现和诊断，手术适应证和手术时机以及基本方法和术式的选择等进行了讨论。 Report Surgical treatment of thoracic aortic aneurysm in 9 cases, 6 males and 3 females. 9 cases of Marfan syndrome ascending aortic aneurysm with aortic valve insufficiency in 3 cases, 2 cases of aortic arch aneurysm, 2 cases of aortic isthmic cystaortic aneurysm and 1 case of pseudoaneurysm, and the aortic dissection artery Tumor (DeBakey Ⅲ type) l cases. One patient died of surgery, the mortality rate was 11.1%. The authors discuss the clinical manifestations and diagnosis of thoracic aortic aneurysms, surgical indications and timing of surgery, and the selection of basic methods and procedures.