Platelets are a blood component responsible for stopping bleeding, and after a decrease in platelet count, the body is prone to bleeding symptoms. Clinically, for patients with a reduced platelet count, it is important to increase the platelet count to reduce the symptoms of bleeding. The common methods to increase platelets clinically are: a. Platelet transfusion is the most effective and most commonly used method to increase platelets, especially seen in patients with acute leukemia after chemotherapy, acute aplastic anemia, myelodysplastic syndrome and other patients. When the platelet count is severely reduced and the patient is accompanied by severe bleeding, the platelet count can be increased by means of platelet transfusion. Second, to increase the platelet count, a common method is to apply recombinant human thrombopoietin or platelet receptor agonist, which can bind to the receptors of megakaryocytes in the bone marrow and promote the proliferation and division of bone marrow megakaryocytes, thus producing a larger number of platelets.