Vomiting after fever in babies can be seen in digestive diseases, neurological diseases and other diseases, the treatment needs to be decided according to the cause. 1. Digestive diseases: such as acute gastroenteritis, babies can have fever, vomiting symptoms, some may be accompanied by diarrhea or abdominal discomfort and other symptoms. Treatment needs to be reasonable diet, vomiting serious need to temporarily fasting, body temperature over 38.5 ℃, can use ibuprofen and other drugs to reduce fever, suspected bacterial infection caused by the need to use antimicrobial drugs (such as cefaclor, cefuroxime) anti-infective and other treatments. 2. Neurological diseases: such as intracranial infections, fever symptoms can occur, vomiting can occur during the course of the disease, mostly projectile vomiting, can be accompanied by convulsions, lumbar puncture examination can assist in the diagnosis. Treatment should be reasonable fever, use mannitol to lower the cranial pressure, and use antibacterial drugs (e.g. ceftazidime) to fight infection if bacterial encephalitis is suspected. 3. Other: such as other febrile diseases, in the acute upper respiratory tract infection, fever can occur during the course of the disease, can affect the gastrointestinal function, vomiting symptoms, often less severe symptoms, the course of the disease need to be reasonable antipyretic, to be the primary disease improves, vomiting symptoms can be relieved. The above medications should be used under the guidance of a physician, and it is recommended to actively seek medical attention and evaluation of treatment by a specialist.