Although there are differences in the body temperature of newborns, most fluctuate between 36°C and 37.3°C. Therefore, a newborn’s body temperature of 37℃ is a normal situation. Because the newborn’s nerve center is not yet fully developed, it is easily affected by the external environment and its own factors, such as higher room temperature, thicker clothes, diet and exercise can lead to an increase in its body temperature. As long as the temperature is not higher than 37.5℃, observation is sufficient and no special treatment is needed. When the body temperature is between 37.5℃-38.5℃, appropriate physical cooling can be taken, such as reducing clothing, warm water swabbing bath, etc. If the body temperature exceeds 38.5℃ and does not drop, accompanied by coughing, vomiting and poor response, it may be caused by infection and requires timely examination at the pediatric department and symptomatic treatment. In the process of caring for children, we must pay attention to the constant room temperature, add and remove clothes at any time, and keep the normal metabolism of children’s skin to prevent abnormal body temperature induced by low or high external temperature.