Tummy ache and fever in children may be caused by the following factors: 1. Indigestion due to excessive diet or frequent consumption of fatty foods, so symptoms such as tummy ache and fever may occur. 2. Infection with intestinal bacteria due to lack of hygiene, eating unclean food or not washing hands before eating food, resulting in tummy ache and fever in children, accompanied by an increase in the number of stools. 3. Symptoms caused by viral diarrhea due to rotavirus.4. Infection with a virus that causes gastrointestinal colds in children may also cause tummy pain and fever. When the symptoms of stomach pain and fever appear, do not take your own medication at home, but take your child to the doctor for treatment in time.