Children with high white blood cells and recurrent fever, if they have a stuffy nose, runny nose, sore throat, cough, coughing phlegm or abdominal pain or diarrhea, often have elevated white blood cells due to infection, resulting in recurrent fever, and would do better with anti-infective treatment. At this time, intravenous antibiotics can be ordered. If there is no allergy to cephalosporin, intravenous ceftriaxone, cefoperazone or cefradine can be ordered for treatment. If there is an allergy, azithromycin or erythromycin can be used to relieve the recurrent fever caused by the increase of white blood cells. If the body temperature exceeds 38.5 degrees, you should also take ibuprofen suspension to reduce fever or acetaminophen pellets, which are also effective. Another kind of leukocyte hyperplasia with recurrent fever, if there are no obvious symptoms of infection, it is likely that a hematological disorder has occurred, and it is best to have a bone marrow aspiration to clarify the diagnosis.