Stomach pain in children may be caused by improper diet, mental and psychological factors, gastrointestinal diseases and other factors. 1. Improper diet: consuming a large amount of spicy and cold food may cause stimulation to the stomach, which will cause stomach pain, after adjusting the diet structure, it may gradually return to normal. 2. Mental and psychological factors: children’s mental and psychological stress or emotional fluctuations, may lead to nerve stimulation, will make the stomach pain. 3. Gastrointestinal lesions: for example, chronic gastritis, duodenal ulcer, pyloric obstruction and other factors can cause stomach pain, which may be accompanied by nausea, vomiting, loss of appetite, diarrhea and other symptoms. The child’s stomach pain, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.