1 year old baby 37.3 degrees is not considered a fever. Fever refers to an abnormally high body temperature, normal body temperature in children fluctuates between 36.9 degrees – 37.5 degrees, the sublingual temperature is 0.3 degrees – 0.5 degrees lower than the anal temperature. Axillary temperature is 36 degrees – 37 degrees, with slight differences in the normal body temperature of individuals, fluctuating less than 1 degree in 1 day. Fever refers to anal temperature greater than 37.8 degrees, axillary temperature greater than 37.4 degrees, when the anal temperature, axillary temperature, sublingual temperature is inconsistent, the anal temperature shall prevail, because the axillary temperature, sublingual temperature affect more factors, while the anal temperature can truly reflect the internal temperature. According to the body temperature, the axillary temperature is used as the standard to classify fever into: low fever temperature ≤ 38 degrees; moderate fever temperature between 38.1 degrees – 39 degrees; high fever temperature between 39.1 degrees – 41 degrees; super high fever temperature > 41 degrees.