High white blood cells in children generally indicate infection, in addition, if suffering from leukemia, Kawasaki disease, etc. can also lead to high white blood cells, it is recommended to clarify the cause, active treatment, to prevent the white blood cell value has been high. 1, infection: high white blood cells in children is generally due to bacterial infections, common in the respiratory tract, gastrointestinal tract, urinary tract, intracranial infections, etc., the body’s immune mechanism by increasing white blood cells to engulf harmful bacteria for Self-protection. Bacterial infections in children can be treated with sensitive antibiotics with fewer side effects, and if accompanied by coughing and coughing, cough suppressants can be given. After the symptoms improve significantly, the blood routine can be rechecked, and if the white blood cells return to normal, the antibiotics can be stopped. Immunotherapy, stem cell transplantation, etc.