近年来 ,我们采用同轴微导管系统超选择性进入支气管动脉远段 ,并改进栓塞制剂和栓塞程序 ,达到避免并发症和迅速止血的目的 ,明显提高了长期反复咯血的止血成功率。临床资料　 48例大咯血患者 ,男 31例 ,女 1 7例 ,年龄2 3～ 68岁。基础病为支气管扩张 30例 ,Ⅲ型肺结核 7例 , In recent years, we use the coaxial microcatheter system to enter the distal segment of the bronchial artery selectively, and improve the embolization preparation and embolization procedure to achieve the goal of avoiding complications and rapidly stopping the bleeding, and obviously improve the hemostatic success rate of long-term repeated hemoptysis. Clinical data 48 cases of patients with massive hemoptysis, 31 males and 17 females, aged 23 to 68 years. The basic disease was bronchiectasis in 30 cases, type Ⅲ pulmonary tuberculosis in 7 cases,