One and a half years old repeated fever 39.5 degrees in the treatment is mainly based on drugs, the specific need to determine the cause of the treatment program, may be related to bacterial infection, viral infection and other factors, specific analysis is as follows: 1. Bacterial infections: most of the children’s repeated fever, may be related to bacterial infections, you can use the relevant antibiotics for treatment, such as amoxicillin, cephalosporin and other drugs. 2. viral infection: such as viral infection caused by bronchopneumonia, there may be recurrent fever, you can use antiviral drugs, such as ribavirin and other antiviral drugs treatment. A 1.5 year old with a recurring fever of 39.5 degrees belongs to the high fever, in addition to the cause of the medication, but also need to pay attention to the use of antipyretic drugs, such as ibuprofen and other drugs to reduce fever, so as to avoid the occurrence of febrile convulsions and so on. The above drugs are recommended to be taken under the guidance of a doctor, not to be used on their own. 1.5 year old repeated fever of 39.5 degrees is recommended to seek medical treatment.