How does 3-year-old baby have fever repeatedly 39 degrees to do

Suggestion: Because the baby's temperature has exceeded 38.5℃, so need to use drugs to cool down, such as ibuprofen, acetaminophen, etc. Because the baby will sweat a lot during the fever, so the family needs to actively drink water for the baby. If the baby's temperature does not return to normal after oral antipyretic drugs, you can take antipyretic drugs again four hours later.