Blood routine is a method of checking the number, shape and proportion of various blood cells in the blood by drawing the patient’s peripheral blood and then passing it through a fully automatic hematology analyzer. The blood routine standards are: i. White blood cells, normal adults contain 4,000-10,000 white blood cells per milliliter of blood, the proportion of neutrophils is 50%-70%, the proportion of lymphocytes is 20%-40% The proportion of monocytes is 3%-8%, the proportion of eosinophils is 0.5%-5%, and the proportion of basophils is 0-1%. Second, the number of red blood cells, adult men contain 4-5.5 million red blood cells per milliliter of blood, adult women contain 3.5-5 million red blood cells, hemoglobin concentration normal adult men is 120-160g/L, adult women is 110-150g/L. Third, platelets, normal people per milliliter of blood and the number of platelets is 100,000-300,000.