Children with gastroenteritis repeated fever, if the symptoms are mild usually need 3~5 days for the temperature to return to normal; if the child’s symptoms are more serious, the fever will be prolonged, the specific time varies from person to person. 1. If the child’s gastroenteritis symptoms are mild, the ability to repair itself is strong, through active anti-infection, rehydration and other treatments, pediatric fever usually lasts 3 to 5 days, and then the body temperature returns to normal. 2. But if the child’s symptoms are more serious, high fever and chills, and accompanied by obvious abdominal pain, diarrhea and other symptoms, failure to timely treatment or improper treatment, the child’s fever will be prolonged, and even electrolyte disorders will occur, the specific body temperature can return to normal time varies from person to person. If the child has gastroenteritis recurrent fever, through active treatment, fever symptoms failed to improve, it is recommended to consult a doctor in time, under the guidance of the doctor, improve the relevant examination, clear cause, targeted treatment.