Atorvastatin in Management of Newly Diagnosed ITP

Inclusion Criteria: 1. Meet the diagnostic criteria for immune thrombocytopenia. 2. within 3 months from diagnosis,untreated patients, may be male orfemale, between the ages of 18 \~ 80 years. 3. To show a platelet count \> 30×10\^9/L and without bleeding manifestations. Exclusion Criteria: 1. Received chemotherapy or anticoagulants or other drugs affecting theplatelet counts within 3 months before the screening visit. 2. Received steroids or other effective therapy for immune thrombocytopenia. 3. Current HIV infection or hepatitis B virus or hepatitis C virus infections. 4. Severe medical condition (lung, hepatic or renal disorder) other than ITP. 5. Unstable or uncontrolled disease or condition related to or impacting cardiac function (e.g., unstable angina, congestive heart failure, uncontrolled hypertension or cardiac arrhythmia) 6. Female patients who are nursing or pregnant, who may be pregnant, or who contemplate pregnancy during the study period. 7. 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. 8. Patients who are deemed unsuitable for the study by the investigator.