Physical cooling can be taken when the body temperature is below 38.5℃, and medication is needed when the temperature is above 38.5℃. For specific medication, please take into account the clinical situation and refer to the doctor’s guidance in the face-to-face consultation. There are many dosage forms of antipyretics, including drops, oral liquid, chewable tablets, suppositories and injections, and the appropriate dosage form can be chosen according to the age of the child. However, injections are the least safe method and are prone to adverse reactions. They are generally not used unless the body temperature is too high. Commonly used antipyretics include acetaminophen and ibuprofen. These two fever-reducing medications are relatively safe clinically. However, specific medications and dosages need to be given after a doctor’s visit, depending on the child’s specific condition. Fever is common in children with respiratory infections and gastrointestinal infections. Ibuprofen can be used in infants and young children to reduce fever and relieve mild headache, sore throat and toothache caused by colds and flu. Press it to reduce fever quickly and smoothly and long-lasting, the average time to control the fever is about 6 hours, up to 8 hours. And it is more effective than acetaminophen for fever above 39℃. Acetaminophen is absorbed quickly and completely, and can produce fever-reducing effects within 30 minutes of oral intake. Side effects are relatively small, basically no stimulation of the gastrointestinal tract, no effect on platelet function and coagulation, no nephrotoxicity, so safety is relatively high. And it can be taken with milk and fruit juice. It is recommended that all children aged 0-5 years with fever of unknown origin use only a single antipyretic, and alternating or combining medications is not recommended.