Ear temperature 37.3℃ is not necessarily a fever. Ear temperature usually needs to be measured using an infrared ear temperature gun, which has the advantages of simple operation and fast measurement, but the measurement temperature is susceptible to a variety of factors such as external environment and change in body position. Therefore, in the case of an ear temperature of 37.3℃, the temperature can be measured again after half an hour’s rest or by other means in a resting state to clarify whether a fever exists. If the ear temperature is 37.3℃ for several times and the patient has chills, red face and poor mental health, it may be related to fever, so the patient can cool down by drinking more water and applying cold towels. If it is only a simple ear temperature of 37.3℃ and the patient does not show common symptoms such as clinical fever, the axillary temperature or anal temperature can be measured again for clarification. If the axillary temperature is higher than 37℃ or the anal temperature is higher than 37.7℃, consider the presence of fever, and drink more water and use ice packs for physical cooling. Ear temperature may be low due to the presence of ear wax in the external ear canal, low ambient temperature, dirty probe, etc., and may also be high after activity or high ambient temperature. Therefore, it is important to avoid these factors when measuring the ear temperature to help the accuracy of the measurement results.