Tongxinluo is a kind of Chinese patent drug,which could promote blood circulation.Recent reports suggested that tongxinluo's effectiveness in reducing the thrombin activity.In this prospective randomized study,all patients in control group will receive blank placebo ,all patients in test group will receive tongxinluo.All patients will be followed up for one year.

The primary endpoint is Platelet Reaction Unit( by VerifyNow) at 30 days.The secondary endpoints include inflammation marker (hsCRP、CD62P-CD41),TT,FIB and PT at 30 days,and MI、Ischemic Stroke, target vessel revascularization and all-cause mortality 、bleeding events at 1 year.

Inclusion Criteria:

- (1)ACS (including unstable angina pectoris, non-ST-segment elevation myocardial infarction and ST-elevation myocardial infarction) （2）Accept at least one coronary stent. （3）The age between18 and 75 . （4）High on-treatment platelet reactivity defined as an ADP-induced platelet aggregation (by VerifyNow，PRU≥236）at 24 hr after clopidogrel loading (300 ~ 600mg)or 24 hours after PCI.

（5）Informed Consent

Exclusion Criteria:

• （1）Tongxinluo contraindication . （2）Receiving GP IIb / IIIa receptor antagonist treatment （3）Who complicate the known bleeding tendency and blood system diseases. （4）NYHA grade III ~ IV （5）Aspirin or clopidogrel allergies （6）Severe liver or kidney dysfunction （7）Pregnancy （8）Cann't accept 30 days supervision and blood proofer. （9）Other serious illness, life expectancy less than 6 months. （10) Planned surgery recently （11) PCI again within 30 days. (12) Mental diseases interfering understanding the informed consent form （13）Accept other drugs or participate in other clinical research at the same time .