4-year-old child body temperature, mostly refers to the armpit temperature, 37 degrees is not a fever. Clinical generally use axillary temperature to measure human body temperature, the normal axillary temperature of 36-37 degrees between the axillary temperature is greater than 37.3 degrees can be called fever, so 4-year-old child body temperature 37 degrees can not be considered a fever. 4-year-old child body temperature 37 degrees, may be higher and environmental temperature, strenuous exercise or crying, etc., reduce the environmental temperature, quiet down after the body temperature may be reduced. However, a body temperature of 37 degrees does not rule out a period of rising body temperature in the course of fever, and the temperature needs to be closely examined. If the child’s temperature continues to rise, it is recommended to consult a doctor in time to clarify the cause and then actively deal with it, so as not to delay the condition.