Children’s white blood cells 22~26×10^⁹/L suggests elevated white blood cells, more dangerous, may be due to infection, leukemia and other causes. 1. Infection: children’s normal white blood cells are 4~10×10^⁹/L, mostly due to bacterial infections, manifested as fever, elevated white blood cells, may be complicated with increased intracranial pressure, sepsis and other diseases, should be timely anti-infective treatment, such as the use of cefdinir, cefixime and so on. 2. Leukemia: it is a malignant hematological disease in which the blood cell system in hematopoietic tissues overproliferates, causing a series of clinical manifestations. Clinical manifestations are fever, anemia, bleeding and so on. Reduced red blood cells and hemoglobin and increased white blood cells can be seen. It is the most common pediatric malignant tumor. Treatment is based on chemotherapy. If children are found to have elevated white blood cells, they should be admitted to the hospital in time to clarify the causes of elevated white blood cells and follow the doctor’s instructions for treatment. The above drugs need to be used under the guidance of a doctor.