The baby has a fever of 38.7℃, which is a moderate fever, you can take antipyretic medicine, you can choose ibuprofen or acetaminophen, choose one of the two drugs. After taking the antipyretic medicine, you should give your child more warm water to make him sweat, which is good for cooling, but do not sweat too much to avoid hypothermia or dehydration. It is not recommended to use two antipyretics in combination or alternately, and the interval between two antipyretics should be at least 4-6 hours. Parents are also reminded that if their child has repeated fevers, they must find the cause of the fever, whether it is a respiratory infection, a digestive infection, or a urinary tract infection. Take your child to the hospital for routine blood, urine, C-reactive protein, chest X-ray and other related tests, and according to the detected causes, carry out targeted treatment.