The baby’s high fever of 39.5 degrees drinking ibuprofen does not come down may be inflammation is not under control, the medication time is relatively short or suffering from other diseases caused by the following: If the inflammation is not under control, it is recommended to improve the blood test in time to clarify whether it is a bacterial infection or viral infection. If it is a viral infection, you need to follow the doctor’s instructions to use antiviral drugs, such as four seasons antiviral combination. If it is a bacterial infection, you need to follow the doctor’s advice to use sensitive antibiotic treatment, such as cefixime and so on. If it is caused by a relatively short period of time, usually one hour after the use of ibuprofen to start to play a role, it is recommended to temporarily observe, and at the same time with physical cooling. Pay attention to the dynamic monitoring of body temperature changes. If it is caused by other diseases, such as pneumonia, tuberculosis and meningitis. It is recommended to improve other tests in time, such as blood routine, C-reactive protein to clarify the cause and then carry out targeted, systematic treatment. There are many other reasons why a baby with a high fever of 39.5 degrees drinking ibuprofen won’t go down, so it is recommended to consult a doctor in time to get a clear diagnosis and targeted treatment.