57 days baby temperature 37.4 ℃, if it is a quiet state under the axillary surface temperature, consider it is not normal, consider hypothermia; if it is the mouth surface, anal surface temperature, or there are eating and crying and other factors affect, consider it normal. Children’s normal axillary body temperature range of 36.0 ~ 37.4 ℃, generally used 37.5 ~ 38 ℃ for hypothermia, if the measurement site for the armpit, the temperature of 37.8 ℃, is abnormal, need to be considered as a febrile state. Normal oral surface, anal surface temperature will be slightly higher than the axillary surface temperature, there are 0.3 ~ 0.5 ℃ fluctuations, the temperature is below 37.9 ℃ is normal, so the measurement of the oral cavity, the anus within the body temperature of 37.8 ℃, consider it normal. However, the baby’s body temperature, may also be subject to diet, strenuous exercise, crying, wearing too thick clothing, high room temperature, emotional excitement and other temporary increase, but also need to be combined with other symptoms to diagnose the disease. A 57-day-old baby’s body temperature of 37.4℃ is at the critical value, and family members are advised to take the child to the doctor for examination, and choose the appropriate way to deal with it after a clear diagnosis.