If a child has a persistent high fever, the following measures can be used: First, give the child antipyretic medication, because persistent high fever in children is very taxing on the body, especially for the loss of water and the load on the heart, so the child needs to be given antipyretic medication, such as ibuprofen or acetaminophen, to bring the child’s temperature down temporarily. If the persistent high fever is caused by a serious bacterial infection, the child’s white blood cell count is often very high and the child should be treated with antibacterial medication, such as cephalosporin or amoxicillin. Only when the pathogenic bacteria in the child are controlled and the child’s infection improves can the persistent high fever be fundamentally improved.