Fever refers to the onset of heat, and hypothermia generally refers to a body temperature of more than 37.5 ℃, so the baby 37.3 ℃ is not considered fever. Body temperature is necessary to ensure that the body’s normal metabolism, usually, if the baby’s body temperature of 37.3 ℃ is the anal temperature or oral temperature, it is considered to be normal, not fever, parents do not need to worry too much. Secondly, the human body temperature is not constant, can be affected by the movement, emotion, day and night and other factors and fluctuations within the normal range. The baby due to the thermoregulatory center is not well developed, so it is easy to cause the body temperature to rise, such as the baby wrapped too tightly, measure the temperature found 37.3-37.4 ° C. At this time, if the baby is not accompanied by other symptoms, usually there is no problem. If your baby’s temperature continues to rise, you need to go to the hospital in time to avoid delaying your condition.