If the child weighs 28 pounds, 0.1 gram of ibuprofen granules can usually be used for 1 dose. Ibuprofen granules are safe and effective antipyretic and analgesic drugs, children under 4 years old according to the weight, usually 5~10mg/Kg each time, then a single dose of 2/3~4/3 bags, that is, the maximum dose of a single 4/3 bags. If the child has recurrent fever, an interval of 4~6 hours is needed before taking the drug again, and the dosage is not more than 4 times a day, and the usage is warm water. After taking ibuprofen orally, drink lukewarm water in small amounts to prevent water loss. At the same time, parents should note that ibuprofen is only symptomatic treatment of fever, if the child has recurrent fever, it is necessary to consult the hospital in a timely manner, to clarify the cause of fever, and timely treatment.