In the blood routine, the total normal adult leukocyte count is 4-10×10^9/L, of which the proportion of neutrophils is 50%-70%. High white blood cell normal neutrophils include the following situations: 1. physiological elevation: transient elevation can occur after human exercise; 2. suggests bacterial infection: need to be judged in conjunction with clinical symptoms; 3. the normal proportion of neutrophils in newborns and infants is 31%-40%, which is different from the adult reference value. If a routine blood test reveals normal white blood cells and high neutrophils, you should consult your doctor to find the cause.