Gastroenteritis is a general term for inflammation of the gastrointestinal mucosa caused by various causes. Children with the disease can eat light, easily digestible foods in moderation to promote physical recovery. If symptoms persist, they can be treated with antibiotics under the guidance of a medical professional. Children are more likely to suffer from gastroenteritis because of their poor gastrointestinal function and low resistance to external infections. Children with reduced gastrointestinal function after illness are prone to nausea, vomiting and diarrhea, so it is best to choose easily digestible starchy foods, such as boiled rice porridge, noodle sheets and noodle soup. If the child has obvious symptoms with vomiting and diarrhea, parents can add a little salt to the noodle soup or rice soup, or give the child rehydration salt to avoid dehydration. As the body gets better, parents can let the child eat a small amount of soft and rotten poultry meat products, such as chicken and duck, to supplement nutrition and eat moderate amounts of vitamin-rich fruits and vegetables, such as cabbage, winter melon and oranges, to speed up recovery. Parents should not give their children cold, greasy food, such as ice cream, fried chicken, etc., which is not easy to digest and will aggravate the burden on the gastrointestinal tract after intake, making the child’s digestive disorder symptoms worse. Parents can let their children take a small number of meals to eat, so as not to eat a lot of food at once and cause the child to vomit. In addition, if your child has dilute watery stools, you can take antidiarrheal medication, such as montelukast, under the guidance of a medical professional. If the child’s intestinal infection is more serious, antibiotics can be applied for treatment.