Inclusion Criteria:  1. Confirmed ITP diagnosis;  Exclusion Criteria:  Received chemotherapy or anticoagulants or other drugs affecting the platelet counts within 6 months before the screening visit; Current HIV infection or hepatitis B virus or hepatitis C virus infections; Maligancy; Female patients who are nursing or pregnant, who may be pregnant, or who contemplate pregnancy during the study period; a history of clinically significant adverse reactions to previous corticosteroid therapy Have a known diagnosis of other autoimmune diseases, established in the medical history and laboratory findings with positive results for the determination of antinuclear antibodies, anti-cardiolipin antibodies, lupus anticoagulant or direct Coombs test; Patients who are deemed unsuitable for the study by the investigator.