Bone marrow hematopoietic disorder means that the hematopoietic stem cells in the bone marrow cannot proliferate and divide normally, resulting in a decrease in the number of various blood cells in the peripheral blood. There are various causes of bone marrow hematopoietic dysfunction, and the common causes are: i. Immune factors, such as aplastic anemia patients due to disorders of immune balance, resulting in damage to hematopoietic stem cells by their own T lymphocytes, causing a reduction of the three lines in the peripheral blood of the patient. Second, caused by radiotherapy and chemotherapy drugs, patients with malignant tumors treated with radiotherapy and chemotherapy will also have bone marrow hematopoietic dysfunction due to the damage to hematopoietic stem cells caused by radiotherapy and chemotherapy, and the hematopoietic stem cells cannot proliferate and divide normally. Third, it is common that some drugs or infection factors, such as long-term patients with serious infections, will secrete various cytokines that inhibit hematopoiesis, and certain drugs, such as patients who apply diuretics for a long time, will cause certain damage to hematopoietic stem cells and cause bone marrow hematopoietic dysfunction.