Intussusception is one of the common abdominal emergencies in pediatric patients. It occurs mostly at the age of 4 months-10 months, mostly within 2 years of age. It is more frequent in spring and summer (March-June) and autumn (August-October). Causes: There are two theories 1. Spasm theory, intestinal peristalsis is too fast, such as some children with enteritis and diarrhea. 2, allergy theory, some allergic children are prone to occur. How can I tell if my child has intussusception? Typical signs: 1) paroxysmal crying (older children may say their stomach hurts); 2) blood in the stool; 3) abdominal masses, which can be felt in the abdomen. If you want to judge quickly, you can also do an ultrasound directly, which can basically confirm the diagnosis. Treatment: 1, air enema reset. 2, water enema reset under ultrasound surveillance. Both of the above methods can be used, water enema damage is relatively small, to avoid x-ray injury, but due to objective reasons, the hospitals have difficulties in carrying out. After enema treatment, basically 90% of patients can be reset successfully. If the repositioning fails, immediate surgery is required. Intussusception is prone to recurrence and has a high recurrence rate, which gradually decreases with age. How to avoid recurrence: 1, pay attention to diet, try to avoid eating cold, spicy food, to avoid stimulating the gastrointestinal tract peristalsis. 2, pay attention to warmth, avoid abdominal cold. 3, avoid allergens. 4, after successful reset of intussusception, the diet should be a small number of meals within 3 days, should not eat too much.