First of all, the cause of low platelet should be identified, and different treatments should be adopted according to different causes, whose common causes include pharmacological factors, primary immune thrombocytopenia, aplastic anemia, leukemia and so on. Treatment includes general therapy, drug therapy, bone marrow transplantation and so on. 1. Drugs: chemotherapeutic drugs such as cyclophosphamide, anti-inflammatory painkillers such as aspirin, etc. may cause low platelets after prolonged use, and should be discontinued or replaced with other drugs for alternative treatment. 2. Primary immune thrombocytopenia: it belongs to autoimmune disease, at this time, it is necessary to rest, reduce activities to avoid injuries; it is necessary to apply glucocorticoid such as prednisone, etc., as well as pro-platelet-generating receptor agonists such as Eltrombopag, etc. to carry out targeted treatment. 3. Aplastic anemia: use cyclosporine A, androgens (testosterone undecanoate), pro-hematopoietic drugs (Eltrombopag) and other treatments in the acute stage, and bone marrow transplantation can be taken in the chronic stage. 4. Leukemia: such as acute myeloid leukemia needs to be chemotherapy with drugs such as cytarabine. Caused by low platelets, there may be other reasons, such as severe liver disease, systemic lupus erythematosus, etc., it is recommended to go to the hospital in a timely manner to improve the examination, under the guidance of the doctor to standardize the treatment, the above drugs can not be taken on their own.