High fever and vomiting may be related to common cold, meningitis and acute enteritis. 1. Common cold: It may be caused by cold, decreased body resistance and other reasons, causing viruses to invade the upper respiratory tract and become infected. Symptoms such as high fever, vomiting, sneezing, generalized weakness, etc. are manifested. 2. Meningitis: Inflammation produced by viruses, bacteria and other pathogens after infection of the meninges, resulting in increasing inflammatory exudate and increased intracranial pressure. This leads to symptoms such as headache, nausea, high fever and vomiting. 3. Acute enteritis: It may be caused by microbial infections such as bacteria and viruses, such as Salmonella spp. and Salmonella spp. It enters the intestines and causes vomiting, abdominal pain, diarrhea, and systemic reactions such as high fever and dehydration. High fever and vomiting can also be caused by other reasons. It is recommended to seek medical advice and follow the doctor’s instructions to conduct relevant examinations, so that the cause can be clarified with the help of the doctor and targeted treatment or therapy can be carried out.