Baby vomiting and diarrhea and then fever, considering that it is caused by enteritis, gastrointestinal cold, bacillary dysentery and other diseases. 1. enteritis: can be caused by viral, bacterial, fungal infections, after the onset of the disease, the child will have varying degrees of vomiting, diarrhea, abdominal pain and other symptoms, and can be accompanied by fever, headache and so on. 2. Gastrointestinal cold: In addition to vomiting, diarrhea, fever and other symptoms, children can also show a series of respiratory symptoms, such as cough, sore throat, runny nose, headache and so on. 3. Bacterial dysentery: Bacterial dysentery can also cause babies to vomit, diarrhea, fever, and stools will change from thin watery stools to mucus, pus and blood. In addition, there are many other reasons that can cause babies to vomit and diarrhea and then fever, it is recommended that the parents of the affected children to take their children to the hospital in a timely manner, to identify the cause of the disease, and actively cooperate with the doctor’s treatment.