Splenic polypeptide injection is a kind of immunomodulatory drug, which plays an important role in the immune function of the body, bone marrow cells and tumor cell proliferation. 1. Regulation of immune function: Splenic polypeptide injection can promote the maturation of T-lymphocytes, regulate the function of lymphocytes and macrophages, and also induce interferon to increase the cytotoxic activity of NK cells, which can significantly improve the cellular immune function of the body and enhance the body’s resistance to infection. It can be used in the treatment of lung infections, immunodeficiency diseases and so on. 2. Stimulate bone marrow cell proliferation: splenic polypeptide injection can stimulate bone marrow cell proliferation, produce a large number of leukocytes, so that hematopoietic function is improved. Improve leukopenia and leukemia caused by radiotherapy. 3. Blocking tumor cell proliferation: Splenic polypeptide injection can non-toxically inhibit cellular glycolysis, so that tumor cells characterized by high glycolysis lack of energy source, preventing tumor cells from proliferation and division, to achieve the effect of anticancer, and improve the malignant quality of tumors. In addition, it should be noted that patients who are allergic to splenic polypeptide injection are forbidden to use it, and this drug should be used under the guidance of a doctor, avoiding blind self-administration.