Intussusception is one of the common diseases in pediatric surgery, . The majority of cases occur in healthy, chubby children between the ages of 4 months and 2 years. Abdominal pain is one of the most common clinical symptoms and is accompanied by vomiting shortly after onset. The vomiting starts with undigested food such as milk, milk lumps or food residues, and may be followed by grass-green bile. Later, blood appears in the stool, followed by dark red blood clots or jam-like stools due to intestinal ischemia and necrosis. Why does intussusception occur in children? The cause is still not fully understood. However, the following causes may trigger the disease: 1. dietary changes and supplementary food stimulation; 2. infants and children are more mobile in the ileocecal region, when the ileal peristalsis occurs abnormally, it can pull the intestinal wall to form a ligature. 3, viral infection or immune response imbalance factors; also intestinal polyps, tumors, intestinal wall hematoma, Meckel’s diverticulum, intestinal cysts can also induce intussusception. The danger of intussusception: children with intussusception can be complicated by fever, dehydration, bacteremia, peritonitis, tachycardia, and if not treated early, intestinal necrosis, hypovolemic or infectious shock or even death can occur. Treatment of intussusception: Our surgery department adopts the advanced B-ultrasound guided water enema and fluoroscopic air enema technology, which can diagnose and treat early intussusception with a success rate of 95% without surgery. For late intussusception, we also adopt laparoscopic or abdominal small incision surgery program, which have good effect.