Intensive Statin Therapy in PCI Patient With Acute Coronary Syndrome

Inclusion Criteria: * 18-85 years old * Patients with clinical diagnosis of ACS * Evidence of a personally signed and dated informed consent document Exclusion Criteria: * Taking or, needing to take atorvastatin over than 20mg/d or any other equivalent statin in the next 6 months, or needing to take fibrates simultaneously according to investigators' judgment. * LDL-C \< 1.8mmol/L in patients without statin therapy in 1 months * Endstage congestive heart failure, or LVEF \< 30% * Active hepatic disease or hepatic dysfunction, or AST/ALT \> 1.5UNL * Myopathy or increased creatine kinase (CK\>2 UNL) * Severe renal dysfunction(Scr \> 3 mg/dl or 264μmol/L) * Allergic or experienced serious adverse reaction to HMG-CoA reductase, or ineligible to take statin as investigator's judgment * Severe aortic valve stenosis or severe mitral stenosis, Obstructive hypertrophic cardiomyopathy, pericardial diseases * Pregnancy, lactation, or child bearing potential women without any effective contraception * Accompanied with malignant disease or other disease, which cause life expectancy \< 6 months * Participating in other interventional clinical trails using drugs or devices * Patients with any condition which, in the investigator's judgment, might increase the risk to the subject for any adverse event or abnormal laboratory finding