The manifestations of blood routine abnormalities are: a. Abnormalities in the number and proportion of white blood cells. The normal range of white blood cells in the peripheral blood of normal adults is 4000-10000/ml, and it is abnormal to be higher or lower than the normal range. At the same time, each of the five types of leukocytes has a different ratio and number, and higher or lower than these numbers and ratios are abnormal. Second, the number of red blood cells is abnormal. The number of red blood cells in the peripheral blood of normal adult males is 4-5.5 million/mL, and that of adult females is 3.5-5 million/mL, which is abnormal if it is higher or lower than the normal range. There can also be abnormalities in red blood cell pressure volume, abnormalities in hemoglobin concentration, abnormalities in mean red blood cell volume, abnormalities in mean red blood cell hemoglobin volume, and abnormalities in mean red blood cell hemoglobin concentration. Third, abnormal platelet count, the normal range of platelets in peripheral blood is 100,000-300,000/mL, higher or lower than the normal range are abnormal performance.