Baby a little fever need reasonable fever, such as the use of physical cooling or drug cooling, and identify the causes of fever and intervention, such as viral infections caused by upper respiratory tract infections fever, oral antiviral combinations such as the four seasons of treatment. 1 Reasonable antipyretic: It is usually considered that the normal axillary body temperature is 36.0~37.0℃. For “a little fever” baby, if the body temperature does not exceed 38.5 degrees, you can use warm water wipes, warm baths or antipyretic patches to increase heat dissipation and thus reduce the temperature, and dynamic monitoring of body temperature. Some of the baby physical cooling may not be effective, there is a persistent increase in body temperature, more than 38.5 degrees, then you need to follow the doctor’s advice to use antipyretic drugs, such as ibuprofen and other drugs for symptomatic antipyretic. 2. Identify the cause of fever and treat it: (1) Acute upper respiratory infection: the above symptoms may appear, mostly caused by viral infection, treatment can use four seasons of antiviral combination treatment, bacterial infection requires the use of antibiotics, such as amoxicillin anti-infection treatment. (2) acute leukemia: this kind of baby fever fever type is variable, can present low fever, often accompanied by anemia, skin and mucous membrane hemorrhage and other symptoms, diagnosis is clear after the use of vincristine and other drugs as prescribed by the doctor for chemotherapy or hematopoietic stem cell transplantation and other treatments. The baby a little 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, to give targeted treatment or treatment.