Inspection method: Hold the top of the thermometer with the mercury head down, shake the thermometer to make the mercury column below 35℃, put the mercury head end under the patient's armpit and take it out after 1O minutes.
37.4~38℃ is low fever, 38~39℃ is moderate fever, above 39℃ is high fever, and below 36℃ is hypothermia. Patients with high fever and hypothermia should go to the hospital as soon as possible.