If a child with gastroenteritis has fever, the following measures can be taken: a. Antipyretic treatment. If the axillary body temperature exceeds 38.5°C, the body will consume more and often feel headache and body aches and pains, which requires timely application of acetaminophen for antipyretic treatment. After suffering from gastroenteritis, vomiting and diarrhea are often present, so oral rehydration salts should be administered to prevent and correct dehydration and electrolyte disorders. The majority of gastroenteritis in children is caused by viral or bacterial infections, so anti-infection treatment should be administered promptly.