If your child has a fever of 39.5 degrees in the middle of the night, you can drink more water and pay attention to rest if he or she is in relatively good spirits and has normal urine and stool. If your child has an appetite, you can supplement light food such as millet porridge and noodle soup appropriately. If necessary, you can take antipyretic and analgesic drugs such as ibuprofen suspension or acetaminophen suspension orally, which can treat and relieve various symptoms caused by cold, such as fever, headache, nasal congestion, runny nose, sneezing, sore throat, etc. Closely monitor the body temperature, and if the temperature drops to 38.5 degrees, physical cooling can be performed.