The main method of boosting white blood cells is to combine the cause of leukopenia and treat it with medications. The treatment drugs include ribavirin, granulocyte colony-stimulating factor, creatinine, prednisone and so on. The causes of leukocyte decrease generally include viral infection, bone marrow suppression after chemotherapy, hematopoietic failure, immune dysfunction and so on. 1. Leukopenia caused by viral infection: antiviral treatment is needed, such as ribavirin, acyclovir, amantadine, etc. 2. Bone marrow suppression caused by chemotherapy: it needs to be treated with leukocyte-boosting drugs, such as granulocyte colony-stimulating factor and Diyu Lianbai tablets. 3. Reduced leukocytes due to hematopoietic failure: drugs to stimulate the hematopoietic function of the bone marrow and promote leukocyte proliferation are used. For example, inosine, adenine, etc. 4. immune dysfunction caused by leukopenia: need to actively treat the primary disease, when the immune function is restored, without drugs leukocytes can return to normal. When there is a decrease in white blood cells, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor for treatment, should avoid blindly using drugs.