Superimposed bowel and intussusception, part of the intestinal tube and its mesentery set into the neighboring intestinal lumen caused by a kind of intestinal obstruction, is one of the common acute abdominal diseases in infancy and childhood, can be life-threatening, once the onset of timely reset treatment. According to the age of onset is divided into acute intussusception and chronic intussusception, the older the age, the slower the onset of the process: a. Acute intussusception: 1, abdominal pain: previously healthy and obese infants suddenly attacked severe and regular paroxysmal colic, the child cries, bending the knees to shrink the abdomen, pale, lasted for a period of time after the abdominal pain is relieved, quiet and go to sleep, after a period of time to re-emerge; 2, vomiting: the first reflex, containing milk lumps and food residue. Containing lumps of milk and food residue, later can contain bile, and in the late stage can vomit feces-like liquid, indicating the presence of intestinal obstruction; 3. Bloody stools: stools can be normal in the first few hours of the disease, and then there is little or no stools. Most of the children in the first few hours after the onset of the discharge of jam-like mucus blood stools, or anal fingerprinting found blood stools; 4, abdominal mass: most of the children in the right upper abdomen under the ribs can be touched with slight tenderness of the set of lumps, sausage-like, smooth and not soft, slightly movable. Chronic intussusception: mainly manifested as paroxysmal abdominal pain, abdominal pain in the epigastrium or umbilicus can be touched mass, painless abdomen flat, soft, no mass, the course of the disease sometimes up to more than 10 days. Vomiting is rare, and blood in stool occurs later.