Pediatric white blood cell hypercapnia causing fever is usually caused by bacterial infection, whether the fever can be reduced depends on the severity of the patient’s condition, and can not be generalized. Whether or not it is difficult to reduce a fever caused by high white blood cells in children cannot be generalized. If the fever is caused by an upper respiratory tract infection, the fever is mild and the white blood cells are slightly elevated, which usually indicates that the infection is not serious, and it is usually easier to reduce the fever after symptomatic treatment. However, if a child’s white blood cells are elevated significantly, and the temperature is high or repeated fever, it usually indicates that the infection is more serious, and may be related to sepsis or certain leukemia, etc., and it is relatively difficult to reduce the fever. Pediatric leukocyte high fever, it is recommended to consult a doctor in a timely manner, a clear diagnosis, active treatment, so as not to delay the condition.