Pediatric intussusception is a segment of the intestine and its ligament into the adjacent intestine, divided into acute intussusception and chronic intussusception, the former is more common. 1, the age of onset: mostly occur within 2 years of age, and infants within 1 year of age, 4-10 months for the peak, and then gradually reduce the incidence with the growth of age, mostly in obese male infants. 2, the onset of the season: year-round, to the late spring and early summer onset is more concentrated. 3, the cause: may be related to changes in dietary habits and ways, food stimulation and surgery caused by intestinal dysfunction, local anatomical abnormalities in the ileocecal region, intestinal spasm and viral infection. 4, clinical manifestations: acute intussusception in infants is mostly seen in the proximal intestine sleeve into the distal intestine, with the end of the ileum sleeve into the ileocecal or colon is more common. Acute intussusception clinically manifests as paroxysmal crying, vomiting, jam-like stools, and salami-like masses can be found in the abdomen. 5, treatment: divided into conservative treatment and surgical treatment. Conservative treatment is generally used within 48 hours of onset, the child’s general condition is good, the set is not heavy, currently includes X-ray fluoroscopy air or barium enema reset, in B ultrasound monitoring saline enema reset and the application of fiber colonoscopy gas reset. After resetting, the child often sleeps peacefully, the abdominal distension is reduced, and the mass disappears. If the child develops abdominal distension, high fever and rapid heart rate after the enema, it may be due to the absorption of bacteria and toxins in the intestine, which requires intravenous rehydration and anti-infection treatment such as antibiotics and related symptomatic support. The indications for surgical treatment are onset for more than 48 hours, poor general condition, multiple recurrences, chronic intussusception, or complex intussusception, failure of non-surgical repositioning, and late combination with other intestinal disorders. Preoperatively, intravenous access, correction of water and electrolyte, acid-base balance disorders, fasting, gastric tube and gastrointestinal decompression, antibiotics, etc. should be established. Possible postoperative complications include hyperthermia, convulsions, abdominal distension, incisional dehiscence, intestinal fistula and peritonitis.