A one-year-old baby with a fever of 39.5 ℃ is a high fever, which may cause the child to have heat convulsions, need to use antipyretic drugs and physical cooling methods to reduce fever treatment. It is also important to treat the cause of the illness. When the baby’s fever reaches 39.5 ℃, can be given under the guidance of the doctor antipyretic drugs, such as ibuprofen suspension or acetaminophen oral suspension, two medication at least 6 hours apart. At the same time, you can apply warm water to the child’s forehead, reduce the clothing worn and other physical methods to reduce temperature, and encourage the child to drink more water. Meanwhile, it is also important to treat the cause of the disease, such as respiratory tract infections caused by bacterial infections, need to actively use antibacterial drugs such as cefaclor, cefdinir and other anti-infective treatment. All of the above drugs should be used under the guidance of a doctor, avoid self-medication. It is recommended that children with fever should be seen by a specialist for evaluation and treatment.