Baby eat bad stomach caused by fever is common in acute gastroenteritis, the treatment needs to adjust the diet, anti-infective agent antipyretic treatment. The baby eat bad stomach there is improper diet, common in acute gastroenteritis, can appear fever, with vomiting, diarrhea or abdominal discomfort and other symptoms, the seriousness of the condition can appear mental depression, decreased urine and other signs of dehydration. Treatment needs to adjust the diet, for vomiting severe need to fast for a short time if necessary, bacterial infections need to actively use antibacterial drugs such as cefotaxime, meropenem and so on. Babies with dehydration need to be treated with oral rehydration salts and, if necessary, intravenous rehydration. At the same time, fasting Clostridium typhimurium bifidum live bacterial powder, Saccharomyces boulardii and other probiotics to regulate intestinal flora; oral montelukast to stop diarrhea treatment. Fever needs to be reasonable antipyretic, body temperature <38.5 ℃ children can use warm water on the child's forehead, reduce the wearing of clothing and other physical methods of cooling, some children's body temperature can gradually decline, for the temperature ≥ 38.5 ℃ children need to use antipyretic drugs under the guidance of the doctor, such as ibuprofen, acetaminophen, etc. for antipyretic treatment. At the same time, it is necessary to identify other diseases with fever to avoid delayed treatment, such as acute appendicitis, which can also present with fever, vomiting and abdominal pain, and this disease requires surgery if necessary. All of the above medications should be used under the supervision of a physician, and it is recommended to actively seek medical attention and evaluation of treatment by a specialist.