Normal body temperature is not one specific temperature point, but one temperature range. Body deep body temperature is relatively constant and uniform, called deep body temperature; The surface temperature is affected by a variety of factors, changes and differences are large, called surface temperature. Clinically, the body temperature refers to the average deep temperature. It is generally represented by oral, rectal and axillary body temperature, of which rectal body temperature is closest to deep body temperature. Normal value: Oral sublingual temperature was 37 ° C (range 36.2-37.2 ° C), rectal temperature was 37.5 ° C (higher than oral temperature (0.3-0.5 ° C), and axillary temperature was 36.5 ° C (range 36.0-37.0 ° C).