High neutrophils in children with fever are usually caused by bacterial infection, and the bacterial infection should be treated at the same time as the antipyretic treatment. Fever is a common symptom in childhood, and appropriate antipyretic methods should be chosen according to the degree of temperature rise. When the body temperature is <38.5℃, warm water can be used to wipe the neck, armpits, groin, etc., or use antipyretic patches on the forehead and other physical methods of antipyretic; when the body temperature is ≥38.5℃, it is also necessary to use medications under the guidance of the doctor, such as ibuprofen and acetaminophen, etc., for antipyretic treatment. At the same time, the bacterial infection that causes fever should be treated. If the bacterial infection causes respiratory tract infection can use cefixime, cefuroxime and other treatments; if the bacterial infection caused by urinary tract infection can be used for compound sulfamethoxazole tablets, amoxicillin clavulanate potassium tablets and other treatments; for leukemia and other blood diseases can also appear in this case, according to the condition of the use of vincristine, Zoerythromycin, such as chemotherapy and other drugs for treatment. All of the above drugs should be used under the guidance of a doctor to avoid self-medication. If your child has elevated neutrophils with fever, it is recommended that you seek prompt medical attention to clarify the cause of the illness and have it evaluated and treated by a specialist.