If a 4-month-old baby has a fever with a temperature ≥ 38.5 ℃, he can take ibuprofen for antipyretic treatment, or a 4-month-old baby’s temperature does not reach 38.5 ℃, but the child’s mental state is particularly bad, or there is a phenomenon that the hands and feet are particularly cold, in this case there may be the formation of convulsions, and oral antipyretic medication can be given as well if necessary. In addition to the application of antipyretic drugs according to the temperature of the 4-month-old baby, but also according to the child’s clinical symptoms of antipyretic drug treatment, oral ibuprofen within an hour after the need to cooperate with physical cooling, can play a good role in reducing fever. Physical cooling can paste antipyretic patches, you can take a bath, you can use warm water to wipe, at the same time appropriate to the baby diligently feed, drink more water, also conducive to fever.