Chronic granulocytic leukemia belongs to one kind of chronic leukemia, which is common among the elderly patients in the clinic, and the disease starts slowly, and the patients do not have obvious clinical symptoms in the early stage, and sometimes abnormalities are found through routine blood tests. Early blood tests of chronic granulocytic leukemia include the following: (1) abnormalities of white blood cells, the number of white blood cells will be abnormally high, and at the same time, the increased white blood cells will be obvious with the increase of neutrophils, and there is no obvious increase of lymphocytes, and sometimes there is also an abnormally high increase of eosinophils and basophils. Second, the performance of red blood cells, usually in the early stage of chronic granulomas, there is no anemia, the number of red blood cells is normal, and the morphology of red blood cells and the average amount of hemoglobin are not obviously abnormal. Third, the performance of platelets, usually the platelet count will be mildly increased or normal.