There is no fastest way to reduce fever in infants, and it is necessary to improve the condition through physical cooling and medication under the guidance of a doctor. Meanwhile, treating the cause of the disease is also important for the recovery of body temperature. If an infant’s temperature is below 38.5℃, physical cooling can be used, commonly used methods include warm water wiping, using a wet towel to wipe the infant’s neck, limbs, armpits, face and other parts of the body, which can have the effect of lowering the body temperature. If the infant’s body temperature is above 38.5 ℃, also need to be under the guidance of the doctor, through the use of antipyretic drugs for treatment, commonly used drugs are ibuprofen suspension, acetaminophen mixing drops and so on. At the same time for the cause of the treatment is also very important for the recovery of body temperature. For example, if the respiratory tract infection is caused by bacterial infection, antibacterial drugs such as cefaclor and cefdinir should be actively used for anti-infection treatment. All of the above drugs should be used under the guidance of a doctor, avoid self-medication. There are many other causes of fever in children, and it is recommended to consult a doctor in time to be evaluated and treated by a specialist.