Children’s vomiting and fever should be treated according to the cause of the disease. The causes of children’s vomiting and fever may be gastrointestinal colds, central nervous system infections and acute gastroenteritis. 1. Gastrointestinal colds: Due to the weak resistance of children and the underdevelopment of their digestive system, they are susceptible to bacterial or viral attack, resulting in gastrointestinal infections, which can manifest in vomiting, fever, abdominal pain, diarrhea and other symptoms. Under the advice and guidance of the doctor, ibuprofen can be used to reduce fever, probiotics to improve intestinal flora and other treatments. 2. Central nervous system infection: bacteria, viruses and other pathogenic microorganisms infect the central nervous system, bacterial encephalitis, viral encephalitis, tuberculosis meningitis, etc., which will make the intracranial pressure increase, resulting in fever and vomiting, it is recommended to go to the hospital immediately, and actively anti-inflammatory and symptomatic treatment under the advice and guidance of the doctor. 3. Acute gastroenteritis: if the daily children’s diet habits are irregular, or eating unclean food, causing bacterial infection, resulting in acute enteritis, usually vomiting, diarrhea, fever and other symptoms, can be in the doctor’s advice and guidance, the use of drugs such as montelukast and other medications to treat, daily to maintain a good and clean eating habits. Children with vomiting and fever are recommended to consult a doctor in time to clarify the cause of the disease and treat the symptoms. During the period of medication, we should pay attention to more rest, not unauthorized use of medication, and in serious cases, we should go to the hospital for examination in a timely manner.