Baby fever also accompanied by vomiting, the specific common causes are as follows: a. The baby is cold, eat undigested food, or eat unclean food, acute gastroenteritis or similar food poisoning, there will be fever also accompanied by vomiting symptoms, mild cases can be home oral medication, according to the baby’s temperature to give antipyretic treatment, late oral some drugs to help gastrointestinal digestion can be, serious cases are need to go to the hospital, under the guidance of the doctor to give treatment. Second, bacteriophageal dysentery is also common in children, the baby will have fever accompanied by vomiting, accompanied by abnormal bowel movements, mucus, pus and blood stool, while the urgency will be very obvious. It is necessary to seek prompt medical attention and take intravenous fluids for treatment. In the case of acute surgical appendicitis, there will be fever accompanied by vomiting, and intravenous fluids will be given to support the treatment of mild cases, while surgical treatment will be given to severe cases. When children have symptoms of encephalitis, they will also have fever and vomiting, so they need to seek medical attention and be treated under the guidance of a doctor.