复套型肠套叠是在单套型肠套叠的基础上3层肠壁再一起套入远侧肠管内,由5层肠壁构成,常见类型为回结型[1]。在通常加压8～13kPa下空气灌肠,其失败的病例中80%以上为复套叠,由于其5层肠壁叠加极难复位,因此,笔者着重对其影像形态进行分析,以利于争取手术时机,避免患者多次进行X Complex intussusception is a single set of intussusception based on the three layers of intestinal wall together into the distal intestine, composed of five layers of intestinal wall, the common type of loop type [1]. In the normal pressure of 8 ~ 13kPa air enema, the failure of more than 80% of the cases of complex stack, due to its superposition of 5 layers of intestinal wall extremely difficult to reset, therefore, the author focuses on the analysis of its image morphology, in favor of surgery Occasion, to avoid patients repeatedly X