Children with fever, vomiting and stomach pain may be caused by acute gastroenteritis, bacterial appendicitis and other causes. 1. Acute gastroenteritis: children’s gastrointestinal function is not well developed, after eating unclean, bacterial food induced gastrointestinal infection, acute gastroenteritis may occur, the patient will also have fever, vomiting stomach pain and other symptoms. 2. Bacterial appendicitis: when a child suffers from bacterial appendicitis, the local intestinal canal will be stimulated when the appendix is inflamed, and to a certain extent, it will be stretched, and the child will have fever, vomiting, stomach pain and other symptoms. Children with fever, vomiting and stomach pain may also have other causes, it is recommended to go to the hospital in time, complete the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.