Ibuprofen is a commonly used fever-reducing drug for children. It has an onset of action of about thirty minutes to one hour and a half-life of four to six hours. Therefore, if a febrile child takes ibuprofen suspension orally, the child will sweat for about an hour and the body temperature will gradually drop. Therefore, we suggest that if the baby’s temperature is very high, before ibuprofen takes effect, the baby should be given a full body warm water bath as an aid to cooling. In addition, if the weather is good and the condition allows, you can also give your baby a warm bath to wait for ibuprofen to play its role in reducing fever.