Baby fever can not be covered because the age of small, the brain’s thermoregulatory center is not well developed, easily subject to the surrounding environment temperature increase and body temperature increase, in the fever with excessive wrapping quilt can not be timely heat dissipation, but easy to make the body temperature rises rapidly, resulting in serious performance of dehydration and convulsions. Therefore, it is important to monitor the body temperature and give symptomatic treatment such as antipyretic when fever is present. If the baby’s mental state is okay, most viral infections are more common and can be observed. If the baby’s mental state is poor, it is necessary to go to the hospital in time to find the cause of the fever and then give the appropriate treatment.