2 months old baby armpit temperature 37.1 ℃ belongs to the normal body temperature range. The baby’s general axillary temperature should be 36-37 ℃, below 37.3 are within the normal range, higher than 37.3 ℃ for fever, so two-month-old baby axillary temperature of 37.1 ℃ belongs to the normal range of body temperature, but higher than the usual body temperature is slightly higher, the common causes for over-thickness of clothing, drinking milk, after activities, environmental temperature is too high. Parents need to avoid overdressing their babies and overheating the environment, as these are not conducive to heat dissipation and are prone to eczema, prickly heat and muffled heat syndrome. Measuring body temperature also needs to be done in the right way, 15-30 minutes after activity, crying and eating. Parents are advised to review the temperature at intervals of one hour or so, and to closely observe the baby’s spirit, appetite, or any other symptoms such as coughing, and to seek medical attention if they feel unwell.