5 month old baby drink ibuprofen fever after fever again need to take reasonable antipyretic symptomatic treatment, at the same time should be clear cause and cause treatment, follow the doctor’s instructions to apply the appropriate drugs. 1. Symptomatic treatment: for this kind of baby temperature recurrence, such as body temperature more than 38.5 ℃ and the use of ibuprofen interval time enough 4 ~ 6 hours, can repeat the use of ibuprofen for symptomatic antipyretic, pay attention to need to be used under the guidance of a physician; such as the interval time is not enough or the body temperature has not yet exceeded 38.5 ℃, you can first try to use lukewarm water wipes, antipyretic patches, etc. to increase the dissipation of heat for physical hypothermia. 2. Treatment of the cause: such as acute upper respiratory tract infection, repeated fever, if combined with bacterial infection, need to follow the medical advice to use antibacterial drugs, such as cefaclor anti-infective treatment. If the child suffers from Kawasaki disease, the above symptoms can also occur, but also with skin rashes, chapped lips and other symptoms, the diagnosis is clear need to use human immunoglobulin and other drugs. Recurrent fever in 5-month-old infants can be due to a variety of causes, and it is recommended to consult a specialist for treatment. These medications should be used under the supervision of a physician.