1 year old babies with recurring fever may be caused by colds, encephalitis, blood system disorders and other factors. 1. colds: due to the baby’s body immunity is low, improper care, may cause influenza, can lead to repeated fever, may be in a high fever state, accompanied by fatigue, cough and other symptoms. 2. Encephalitis: usually caused by viral infections, which can lead to recurrent fever in one-year-old babies, which may also be accompanied by headache, poor mental state, fatigue, drowsiness, and in severe cases can lead to coma. 3. blood system diseases: for example, leukemia, thrombocytopenic purpura, etc., will make the 1-year-old baby often fever, may also be accompanied by sweating, fatigue, bleeding and other symptoms. 1 year old baby recurrent fever may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.