Whether an infant’s body temperature of 37.4°C is a fever or not depends on the specific circumstances of the child and cannot be generalized. Since the body temperature of infants is slightly higher than the normal human body temperature and the human body has a thermoregulatory mechanism, the body temperature sometimes fluctuates within 1°C during the day. Therefore, if the infant is in good spirits and is not accompanied by other uncomfortable symptoms, the temperature of 37.4 ℃ can continue to be observed, it is possible that the body temperature is too thickly dressed, higher outside environmental temperature, resulting in a transient increase in body temperature, usually not fever. If the child’s body temperature continues to rise, accompanied by nasal congestion, runny nose, cough and other fever symptoms, it may be a fever phenomenon. If it is lower than 37.5℃, no special treatment is needed, and you need to pay attention to keep warm and avoid getting cold. If it exceeds 37.5℃, physical cooling methods such as warm water baths can be taken. If the temperature exceeds 38℃, the baby should be treated with oral antipyretic drugs under the guidance of the pediatrician. Infants with a body temperature of 37.4℃ should pay attention to drinking water properly, as the body may take away some water in the process of heat dissipation to prevent dehydration. In addition, parents should pay attention to observe their mental status and subsequent temperature changes.