The blood characteristics of chronic granulocytic leukemia, first of all, we must recognize that chronic granulocytic leukemia is a neoplastic disease, divided into three phases, namely, chronic phase, accelerated phase, and acute phase: 1, chronic phase: the main manifestation of leukocyte hyperplasia, and is dominated by an increase in the number of young and middle-aged mature cells, the number of leukocytes can exceed 50 × 10^9/L, generally the average is about (20-500) × 10^9/L 2. accelerated phase: further increase in leukocytes can be seen, other cells appear, such as primitive cells will be around 5%-19%, increase in eosinophils and basophils, anemia will be aggravated compared to the chronic phase, platelets can appear to decrease or progressively increase to more than 1000×10^9/L. 3. Acute phase: you can see a large number of naive cells in the peripheral blood, that is, inside the routine blood can be seen more than 19%, anemia further aggravated, even as low as 60×10^9/L, has appeared severe anemia, platelets can appear significantly reduced, less than 100×10^9/L, as for other cells, can also be seen some anomalous new cells, or very primitive tumorigenic cells.