12 months baby fever repeatedly back again and again can be seen in toddler rash, acute gastroenteritis and other diseases, treatment needs to be based on the cause of the general treatment, drug treatment. 1. toddler rash: caused by human herpesvirus infection, the clinical may appear repeatedly fever, manifested in the above phenomenon, may be accompanied by lymph node swelling, such babies can be in the fever 3~5 days rash appears, body temperature is normal. These babies can use ibuprofen or acetaminophen to reasonably reduce fever during the course of the disease, need more rest, light diet. 2. Acute gastroenteritis: the above phenomenon can be seen in the clinic, often accompanied by vomiting or diarrhea and other symptoms. These babies need to pay attention to adjust the diet, suspected bacterial infection caused by the need to use cefaclor and other anti-infective. 3. Urinary tract infection: clinical recurrence of fever, for the age of urinary tract irritation can be atypical, routine urinalysis can assist in the diagnosis, the treatment can use cefaclor and other anti-infective treatment, can be appropriate to drink more water. 4. Other: such as acute leukemia, may also appear repeated fever, may be accompanied by anemia, skin and mucous membrane bleeding, etc., diagnosis is clear on the treatment of vincristine and other drugs for chemotherapy or hematopoietic stem cell transplantation and other treatments. The above medications should be used under the guidance of a physician. Recurrent fever can be seen in a variety of diseases, and should be actively consulted and evaluated and treated by a specialist.