Three-year-old female baby night fever of 39 degrees may be related to viral or bacterial infection, the need to promptly give the baby fever, followed by the baby should be taken to the doctor, to clarify the cause of fever to give targeted treatment, please follow the doctor’s instructions. 1. three-year-old baby girl fever at night, body temperature of 39 degrees, need to give antipyretic drugs to reduce fever, such as ibuprofen, acetaminophen, etc., at the same time with the physical antipyretic, such as warm water bath, the head of the antipyretic stickers, etc., in order to prevent the occurrence of hyperthermia convulsions. 2. baby fever should be clear cause of fever, such as bacillary dysentery, lymph node tuberculosis, streptococcus pneumonia and other bacterial infections caused by the consideration of the application of penicillin and other antibiotics anti-infective treatment, such as influenza viruses caused by fever, you can take oseltamivir and other antiviral drugs treatment. Three-year-old baby girl night fever of 39 degrees, there may be other reasons, it is recommended that parents take the baby to the doctor in time to find the cause of fever, the doctor to give targeted treatment, do not blindly give the baby medication.