When a child has a fever of 39°C, it is already in the category of high fever, which is usually already accompanied by extremely uncomfortable manifestations, such as mental depression, irritability and crying, cold hands and feet, etc., and needs to be treated with antipyretic drugs. Some of the fever-reducing medications that are safe for children are ibuprofen and acetaminophen. However, ibuprofen is not recommended for babies less than six months old. While using antipyretic drugs for babies must pay attention to drink less and more warm water to ensure fluid intake. Some babies with persistent and stubborn fever can use a combination of Chinese herbal medicine to regulate the fever, such as children’s fever clearing pills, antelope oral liquid, etc. In addition, the sudden appearance of high fever in children is usually an infection factor, before the infection is effectively controlled, the body temperature will repeatedly manifest as fever, so the active diagnosis and treatment of the original disease must be preferred, so as to solve the problem of fever at the root.