Spirulina polysaccharides (SPP) and Spirulina phycocyanin (PC) can enhance the hematopoietic function of the bone marrow system, stimulate the formation of erythroid cell colonies, and increase the absorption and utilization of iron; promote the proliferation and differentiation of bone marrow hematopoietic cells, directly act on hematopoietic stem cells (CFU-S) and granulocyte-monocyte progenitor cells (CFU-GM), enhance the renewal of CFU-S, and promote the differentiation of CFU-GM; enhance the activity of colony stimulating factor (CSF), and further promote the differentiation of CFU-GM; regulate the body's immune function, reduce or eliminate the inhibition of cyclophosphamide on the body's immune system; enhance the proliferation activity of bone marrow cells, which is conducive to the formation of immune effector cells such as macrophages, T cells and B cells; increase the activity of the body's nuclease endonucleases, and enhance the repair and synthesis of the body's DNA; reduce the mortality rate of rats with anaphylactic shock and significantly reduce It can reduce the level of histamine in the blood, inhibit the passive skin allergic reaction caused by anti-DHPIgE and the release of histamine by peritoneal mast cells; correct the imbalanced TH1/TH2 cytokine network by regulating the expression of TH1 and TH2 cytokines, reduce the synthesis of IgE and thus prevent the occurrence of allergic inflammation; inhibit the growth and replication of tumor cells, and enhance the body's ability to kill tumor cells by enhancing the body's immunity and antioxidant capacity; selenium can stimulate the body's immune system, activate natural killer cells and macrophages to produce a large amount of tumor necrosis factor, accelerate the necrosis and reversal of tumor cells; it has anti-radiation effect, and protects bone marrow cells from radiation damage; regulate blood lipids, and is rich in excellent unsaturated fatty acids such as gamma-linolenic acid and linoleic acid, which prevent cholesterol from accumulating in blood vessels, promote the synthesis of high-density lipoprotein, and participate in the body's blood lipid regulation.