Platelets on two refers to the platelet index of 2 × 10⁹ / L, should first supportive treatment, stabilize the vital signs and then according to the cause of thrombocytopenia treatment, including general treatment, drug treatment, surgical treatment and so on. If the platelet index is 2×10⁹/L, fresh single platelet should be transfused in time to ensure the stabilization of vital signs such as respiration, heart rate and blood pressure. And then according to the cause of thrombocytopenia for the corresponding treatment. 1. Primary immune thrombocytopenic purpura: glucocorticoids such as prednisone and gammaglobulin are commonly used drugs, and recombinant human thrombopoietin and rituximab can be used for treatment when the effect is not good. If the disease is prolonged and not cured, splenectomy can be considered. 2. Aplastic anemia: pay attention to rest, avoid infection. Intravenous blood transfusion can correct the symptoms of anemia, intravenous transfusion of platelets, frozen plasma, etc. can control bleeding, and antibiotics such as cefadroxil can be used when accompanied by infection. Young patients can consider allogeneic hematopoietic stem cell transplantation. 3. Acute leukemia: single platelet suspension can be infused to improve platelet count. Glucocorticoid drugs such as dexamethasone and chemotherapeutic drugs such as vincristine and cyclophosphamide can be used to rapidly remove leukemia cells from the body, and surgery such as hematopoietic stem cell transplantation can also be performed. There may be other reasons for thrombocytopenia, and the treatment methods are different depending on the individual’s condition. It is recommended to improve the examination in time, clarify the cause of the disease, standardize the treatment under the guidance of the doctor, and avoid self-medication.