The main causes of recurrent stomach pain and fever in children are acute gastroenteritis and acute appendicitis. 1. Acute gastroenteritis: There are various causes of acute gastroenteritis, such as viruses, bacteria, parasites and other causes, among which rotavirus is a common cause of acute gastroenteritis in children. 2. Acute appendicitis: Common symptoms of acute appendicitis include abdominal pain, fever and vomiting. A small percentage of appendicitis can be caused by foreign bodies, parasitic infections and inflammatory stenosis. Repeated stomach pain and fever in children may have other causes, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.