First of all, we should check the blood items of the peripheral blood. The red blood cells and hemoglobin visible in the peripheral blood items are reduced, most of them are positive cells and positive hemoglobin anemia. The number of white blood cells increased accounts for more than 50%, and the rest are normal or decreased. However, the number of white blood cells may increase or decrease during the whole course of the disease. The classification of white blood cells indicates that the number of primitive cells and immature cells is in the majority, and the number of platelets is reduced. Another very important examination is bone marrow examination, which is an important basis for establishing diagnosis and evaluating curative effect. The typical bone marrow item is the extreme proliferation of primitive and immature cells of this type of leukemia, the reduction of erythroblasts and megakaryocytes, and the bone marrow of a few children shows hypoplasia.
