The main reasons for the increase in white blood cells in infants are as follows: a. The white blood cell count may be high in newborn infants within the first month of life, which is a normal physiological phenomenon and not caused by disease, so parents do not need to worry. Second, because of acute infections or inflammation, such as infections with respiratory tract infections, gastrointestinal tract inflammation or other special diseases, the presence of bacteria will be high white blood cells, infants usually have fever or vomiting, diarrhea and other corresponding symptoms, anti-inflammatory drugs can be applied for treatment, such as cefixime cephalosporin anti-inflammatory drugs or penicillin anti-inflammatory drugs amoxicillin, are commonly used for leukocyte hypertrophy drugs. Third, the stress reaction, such as the baby in shock, trauma or bleeding and other situations occurring when the emergency stress reaction, white blood cell count may increase, do not need anti-inflammatory treatment, only for the treatment of stress reaction can be.