Fever in an eight-month-old baby can be caused by upper respiratory infection, gastroenteritis, etc. If ibuprofen is needed, you need to follow your doctor’s instructions. Current pediatric guidelines recommend children’s antipyretic drugs include ibuprofen and acetaminophen, children over 6 months old can calculate the dosage of the drug according to their weight, each time the drug is used at an interval of 6 hours, and need to follow the doctor’s instructions for medication, therefore, 8-month-old babies are allowed to use ibuprofen. Ibuprofen is suitable for infants and young children with a body temperature of more than 38.5 degrees to reduce fever, relieve the mild headache caused by upper respiratory tract infections, gastroenteritis, etc., sore throat, etc., the common adverse effects of mild gastrointestinal discomfort, rash, tinnitus, transaminase elevation, etc., is prohibited in the drug allergy, active gastrointestinal hemorrhage, ulcers, severe heart failure. Therefore, 8-month-old babies with fever, it is recommended to consult a doctor in time to avoid delays.