There are short-acting leukocyte boosting injections, which are used once a day, and long-acting leukocyte boosting injections, which are used once for each chemotherapy treatment. 1. Short-acting leukocyte-boosting injection: commonly used drugs include recombinant human granulocyte colony-stimulating factor injection, which is suitable for leukopenia caused by cancer chemotherapy. It is injected subcutaneously or intravenously once a day 24-48 hours after the end of chemotherapy and may have side effects such as fever and body pain, and is forbidden to be used by those who are allergic to it, and the blood routine should be rechecked every 3 days during the period of using the drug to understand the situation. 2. Long-acting leukocyte-boosting injection: commonly used drugs are polyethylene glycolized recombinant human granulocyte stimulating factor injection, applicable to leukopenia caused by chemotherapy for malignant tumors, 24 hours after the end of each chemotherapy treatment, there may be nausea, fatigue, fever, body pain and other side effects, it is forbidden to be used by those who are allergic to it, do not use it from 14 days before the administration of chemotherapy to 24 hours after the chemotherapy treatment. Patients are advised to consult the hospital in time. If the above drugs are needed, the suitable whitening drugs should be selected and applied under the guidance of the doctor.