There are many causes of recurrent fever in 9-month-old babies, such as respiratory tract infections, intestinal infections, urinary tract infections, Kawasaki disease, etc.? The most common causes of recurrent fever in 9-month-old babies are upper respiratory tract infections, intestinal infections, urinary tract infections, etc. Most of them are caused by infections of pathogenic microorganisms such as viruses and bacteria.? If the fever is recurrent and prolonged, non-infectious diseases such as Kawasaki disease and leukemia need to be considered in conjunction with other symptoms.? 9-month-old babies with recurrent fever, there may be other causes, such as acute gastroenteritis, encephalitis, etc. It is recommended to consult a doctor in time to identify the cause and actively cooperate with the doctor’s treatment.