输尿管内支架管又叫双Ｊ管 ,它的引流优点已被公认[1,2 ] ,应用将更普遍 ,其不良作用主要有尿路刺激征、尿盐沉淀等。有关双Ｊ管上移回缩到输尿管内形成医源性异物的文献国内甚少 ,作者从 1 992年起使用双Ｊ管 1 3 1例 ,其中 6例双Ｊ管上移成异物 ,现分析其原因并浅谈几点防治 Ureteral stent called double J tube, its drainage advantages have been recognized [1,2], the application will be more common, the main adverse effects include urinary tract irritation, urine sedimentation and so on. There are few literatures on the double J-tube retraction and retraction into the ureter to form iatrogenic foreign body. Since 1993, the authors used 131 cases of double-J tube, in which 6 cases of double J-tube moved up to foreign body, The reason and talk about prevention and treatment