Objective ：To study the clinical manifestations and diagnosis and treatment of intussusception in children.

Methods： Analysis the clinical data of 839 cases of intussusception in children diagnosed by B ultrasound between Jan. 2013 and Jan. 2016.

Results： Among the 839 cases, 599 were male and 240 were female, the ratio of male to female being 2.5∶1. Air enema reduction was successful in 758 cases, the success rate being 90.3%; 81 children were successfully treated by surgery; intussusception relapse occurred in 86 cases, with the recurrence rate being 10.2%, who received air enema reduction again and 85 were successfully treated, the success rate being 98.8%. In the pathological aspect: there were 805 cases of primary intussusception, 34 cases of secondary one(polyps in 5 cases, Meckel's diverticulum in 20 cases, intestinal duplication in 3 cases and allergic purpura in 6 cases). Intestinal necrosis was found in 33 cases during surgery, which was confirmed by pathology after surgery.
Conclusion： Air enema reduction is an effective treatment for children with intussusception. Timely surgery is recommended in case of reduction failure in order to avoid intestinal necrosis. For the children with repeated intussusception, there may be the possibility of abnormal anatomy of ileum and cecum and secondary intussusception. Intestinal necrosis is related to the type and length of time of intussusception.