Tummy pain in children usually refers to abnormal pain in the lower abdomen, and there are many causes of this problem that need to be carefully identified and treated. The more common causes of abdominal pain in children are functional abdominal pain and organic abdominal pain. Functional abdominal pain refers to abdominal pain caused by physical and environmental factors, which means that the child has no anatomical abnormalities of the digestive tract, and may be related to psychological and physiological factors, such as mesenteric lymphadenitis or digestive tract infections, etc. Most of them are caused by internal diseases and are treated mainly by internal medicine. Organic abdominal pain, on the other hand, mainly refers to the presence of pathological and anatomical changes in the gastrointestinal tract of the child, whose pathological changes, mostly destructive or with residual underlying lesions, are often caused by surgical diseases, and often the symptoms of stomach pain are more intense, appearing as colic or paroxysms, and recurring. At this time, it is important to be alert to the fact that the child is suffering from intussusception, acute gastroenteritis and appendicitis, and must be treated in a timely manner to avoid delaying the disease. These attacks are severe and serious and may endanger the child’s life. There are many causes of abdominal pain in children, some of which are mild and require only diet control and self-regulation, but if they are caused by serious diseases, they need to be treated as soon as possible.