Short-acting leukocyte boosting injection refers to recombinant human granulocyte-stimulating factor injection, the general dosage of a single injection is about 1~5μg/kg, depending on the cause of the disease. Long-acting leukocyte boosting injection: polyethylene glycolized recombinant human granulocyte stimulating factor, the recommended dosage for use is a fixed dose of 6 mg in a single injection, or it can be individualized according to the patient’s body weight at 100 μg/kg, once per chemotherapy periphery. Recombinant Human Granulocyte Stimulating Factor Injection is one of the major cytokines that regulate granulopoiesis in the bone marrow. It is not possible to generalize about the exact dosage of this drug for one injection, which depends mainly on the cause of the disease. If it is used for the treatment of cyclic neutropenia, chronic neutropenia, when neutrophils are less than 1000/mm3, the dosage for one injection is 1μg/kg. If the neutropenia is caused by aplastic anemia and myelodysplastic syndromes, the recommended dosage is 2-5 μg/kg per injection; however, due to the differences in each patient’s condition and physical status, it is impossible to generalize the exact dosage. All in all, patients must follow the doctor’s instructions to use recombinant human granulocyte stimulating factor injection and go to the hospital for follow-up on time.