Most of the recurrent fevers in 19-month-old babies are caused by infectious factors, such as pneumonia, etc. They may also be due to non-infectious factors such as Kawasaki disease, etc. While antipyretic treatment is being given, the cause of the disease needs to be clarified and targeted treatment should be carried out. Babies with fever need to choose the appropriate antipyretic method according to the degree of temperature rise, such as physical cooling, oral medication, etc.. Body temperature <38.5 ℃ can use warm water on the child's forehead, reduce the wearing of clothing and other physical methods to lower the temperature; body temperature ≥ 38.5 ℃ also need to use antipyretic drugs such as ibuprofen, acetaminophen and other antipyretic treatment under the guidance of a doctor. 19 months baby immune system is not well developed, very likely to be a variety of viruses, mycoplasma, bacterial infections, so this situation can also lead to the baby appeared recurrent fever performance, for viral infections in general, no special medication; such as bacterial infections can be cefuroxime, penicillin and other antibiotics; such as mycoplasma infections can be azithromycin and other drugs treatment. Kawasaki disease, also known as pediatric cutaneous mucocutaneous lymph node syndrome, is most common in children under the age of 5. The disease can also cause recurrent fevers in 19-month-old babies, which can be treated with aspirin, gammaglobulin, dipyridamole, and other medications. All of the above medications should be used under the guidance of a doctor and avoid self-medication. There are many other causes of recurrent fever in 19-month-old babies, and it is recommended to consult a doctor promptly to identify the cause and give targeted treatment.