肠套叠是小儿常见的一种急腹症,多发生于6～12个月的婴儿,男孩比女孩多见,肥胖儿比瘦弱儿多见,2岁以后则逐渐减少。婴儿的肠管相对比成人长而薄,包裹在肠管表面的肠系膜较长而柔软,不能很好地将肠管固定在后腹壁而活动度大,肠蠕动也还不规则,容易发生肠蠕动紊乱。本病多发生于小儿突然改变饮食种类、饮食不洁或断乳前后添加辅食不当时,有的与驱虫药使用不当、气候环境变化或腹泻有关。这时因胃肠道受到刺激后蠕动功能发生紊乱而导致肠管的异常套叠。所谓肠套叠,就是肠管一部分及系膜套入附近肠腔内,形成了肠 Intestine intussusception is a common acute abdomen in children, occurred in 6 to 12 months of infants, more common in boys than girls, obese children more common than thin children, 2 years after the gradual decrease. Infant’s intestine relatively long and thin than adults, wrapped in the intestinal surface of the mesentery longer and softer, can not be well fixed in the posterior abdominal wall and large mobility, bowel movements are not regular, prone to bowel disorders. The disease occurred in children suddenly change the type of diet, improper diet or weaning before and after adding improper food, and some insecticide use improper use, climate change or diarrhea. At this time due to stimulation of the gastrointestinal tract after the dysfunction of peristalsis caused by abnormal intussusception. The so-called intussusception, is part of the intestine and mesangial sleeve into the vicinity of the intestine, the formation of the intestine