Baby vomiting and diarrhea fever may be caused by food poisoning, gastrointestinal cold, bacterial dysentery and other reasons. 1. Food poisoning: vomiting, fever, diarrhea, chills, nausea, abdominal pain and other symptoms caused by eating food containing toxic substances. 2. Gastrointestinal cold: caused by pathogenic microbial infection, unclean diet, cold and other reasons, patients will have fever, nasal congestion, nausea, vomiting, diarrhea and other symptoms. 3. Bacterial dysentery: caused by Shigella infection, patients may experience fever, vomiting, diarrhea and other symptoms, some patients may experience headache, projectile vomiting and other central nervous system symptoms. Baby vomiting and diarrhea fever is recommended to consult a doctor as soon as possible, under the guidance of a professional doctor targeted treatment.