The body temperature of newborns is different from that of adults, and is relatively higher than that of adults, mainly because the metabolism of newborns is faster, and because of the imbalance between heat dissipation and heat production, the body temperature fluctuates more than that of adults. However, what parents may not be aware of is that each baby’s body temperature is different and there are some small differences. The body temperature is affected by many factors, such as high indoor greenhouse, thicker mattress, more clothes, and activities, crying and eating, etc. will make the baby’s body temperature rise. But generally speaking, the normal low temperature of newborns is kept between 36-37 degrees Celsius, the highest will not exceed 37.4 degrees Celsius, once the newborn body temperature reaches or exceeds 37.4 degrees Celsius, you can basically confirm that the baby has a fever. When the baby is hungry, cold, or relatively quiet, the baby’s body temperature will appear to be low. Since the thickness of the subcutaneous fat and skin of babies is thinner than that of adults, the heat of the body can be easily transferred to the surface of the skin. When the ambient temperature is high, the baby will sweat faster than adults, but the body temperature does not decrease with sweating, and the body heat is difficult to dissipate, then we must pay more attention to this situation, the baby is prone to heat stroke or dehydration.