Children with high white blood cells are mostly seen in bacterial infectious diseases, and if they suffer from certain blood diseases, they are also likely to show a persistent increase in white blood cells. Anti-inflammatory drugs can be used first, which is very helpful to restore the high white blood cells. It is recommended to choose broad-spectrum antibiotics, such as cefuroxime or azithromycin, etc., which can inhibit the bacterial inflammation in the body and make the white blood cells return to normal gradually. When observing the white blood cell count, we should also pay attention to the values of red blood cells, hemoglobin and lymphocytes, and if these values are abnormal at the same time, we should also consider whether it is a blood disease or viral infectious disease, and we should make concerted efforts to treat it. Only after the disease is clearly diagnosed can the symptoms be effectively controlled and the disease be cured.