Within a month the baby belongs to the newborn, the thermoregulatory center is not perfect, easy to be affected by the external environment, temperature, too much parcel and infection and other factors cause low fever. If the baby fever, should be appropriate to undo the baby’s clothes local cooling, generally do not need to take antipyretic drugs for fever treatment. The baby fever if exclude the package too tight, the environment temperature is too high factors, to focus on considering whether the baby has an infection, should be active in the family care fever at the same time, take the baby to the hospital as soon as possible to see the pediatric emergency room, need to do a detailed assessment of the child’s physical condition check, the need for blood tests, C-reactive protein to understand the status of the infection. If the infection is serious, the baby may have to be hospitalized. Infections are generally okay, and less serious ones can be treated at home with oral medications.