Constant stomach pain in children may be caused by functional constipation, intestinal cramps, appendicitis, acute enteritis and other reasons. It can be treated by eating more vegetables and fruits, applying hot compresses on the abdomen, surgical treatment and using medicines. 1. Constipation: Functional constipation may occur if children eat less fruits and vegetables or eat foods with low water content. Functional constipation may be accompanied by persistent pain in the stomach. To relieve the symptoms of abdominal pain, you can eat more vegetables and fruits, such as celery, bananas, etc., which can promote gastrointestinal peristalsis, and if necessary, you can use corkscrew to help defecate to relieve the symptoms. 2. Intestinal spasm: children with persistent and severe abdominal pain may be the manifestation of intestinal spasm. The symptoms of abdominal pain can be relieved by applying hot compresses to the abdomen. If necessary, go to the hospital and follow the doctor’s instructions for treatment. 3. Appendicitis: persistent abdominal pain in children may be a sign of appendicitis. Acute appendicitis, abdominal pain is often located in the lower right abdomen. In this case, you need to go to the hospital in time, if necessary, appendectomy. 4. Acute enteritis: after eating unhygienic food, children may cause an attack of acute enteritis, with persistent abdominal pain and diarrhea. At this time, it is necessary to properly replenish electrolytes to prevent dehydration, if necessary, you can take intestinal mucosal protective agents, such as montelukast. If a child develops persistent abdominal pain, it is necessary to go to the hospital in a timely manner to determine the cause and then carry out targeted treatment. The above medications should be used in accordance with medical advice.