Pediatric intussusception is one of the common acute abdominal conditions in children less than 2 years old. The main manifestations are paroxysmal abdominal pain (crying), recurrent vomiting, and blood in the stool. Early diagnosis of the disease the first time to the hospital, air enema success rate can even reach 90% or more, the only treatment for the disease is enema (air, saline or barium), surgery two methods. If you wait until you have blood in your stool to come to the hospital, the success rate of air enemas is much lower. Even many combined with hypovolemic shock, only surgery can be done. Surgery is a permanent trauma for the pediatric patient and there is still a possibility of recurrence after surgery. In this way, time is of the essence for pediatric intussusception. Etiology: Briefly, the cause of primary intussusception is not known, while secondary intussusception may be caused by Michael’s diverticulum or intestinal polyps. The majority of pediatric intussusceptions in children younger than 2 years of age are primary. Primary intussusception has some triggers, such as diarrheal disease and upper respiratory tract infections that may trigger the disease, but are not the cause of the disease. These triggers cause disturbances in intestinal peristalsis and eventually lead to the development of intussusception. In older children older than 2 years of age or in recurrent cases of intussusception, it is important to consider whether there is a combination of intestinal developmental malformations, which is why colonoscopy or isotope examination is required. Clinical manifestations: In summary, there are three symptoms and one sign. Paroxysmal abdominal pain (crying), recurrent vomiting, blood in the stool and abdominal salami-like masses. Generally, paroxysmal abdominal pain and vomiting should be considered for this disease, and if suspected, an abdominal ultrasound can be done to confirm the diagnosis. Diagnosis: The diagnosis of the disease depends on the typical manifestations and abdominal ultrasound. As long as the parents can think about it or visit the doctor in time, most of them will be able to confirm the diagnosis in time. Many doctors in county hospitals or rural doctors who have not heard of the disease are prone to misdiagnosis. Treatment: Air enema, surgery. Basically, the more economically developed the region, the higher the success rate of air enema, because doctors and parents have higher medical awareness, it is easy to diagnose and treat early. Surgery is an option for enema failure, and some remote areas may have intestinal necrosis and perforation at the time of consultation, and surgery may even remove part of the intestinal canal, which is even more traumatic for the child. Recurrence: The disease is an easily recurring one, and generally the incidence of primary intussusception becomes less and less with age. Secondary intussusception can recur unless the cause is found and treated.