Acute gastroenteritis fever indicates the presence of infection. If the temperature persists above 38.5°C and the patient has obvious symptoms of nausea and vomiting and is unable to eat, he or she needs to go to the hospital for infusion treatment. Inability to eat, nausea and vomiting can lead to aggravation of acute gastroenteritis, electrolyte and water disorders, and diarrhea may lead to dehydration. In addition, a persistent body temperature above 38.5°C indicates a more serious infection, and a persistent fever can further aggravate dehydration, so at this time it is recommended that the patient should still go to the hospital for an infusion of symptomatic anti-infection, as well as supplemental water-electrolyte solution to ensure the recovery of the condition. If the temperature is below 38.5℃, and the patient does not have obvious nausea or vomiting and does not affect eating, the patient can be treated at home with symptomatic observation support.