Abstract 【Objective】To investigate the effect of half-dose reteprase combined with resuvastatin on coagulation status in patients with acute ST-segment elevation myocardial infarction (STEMI).【Methods】A total of 86 patients with acute STEMI admitted in our hospital from October 2016 to October 2017 were randomly divided into two groups: control group (nong43, half dose of reteprase) and observation group (nyang43, half-dose of reteprase combined with resuvastatin), and the cardiac function of the two groups was observed. Coagulation factor and serum factor.【Results】After treatment, left ventricular end-diastolic diameter (LVEDD) and left ventricular end-systolic diameter (LVESD) in the observation group were significantly lower than those in the control group (P<0.05), and the cardiac output (SV) and left ventricular ejection fraction (LVEF) were significantly higher in the observation group than in the control group (P<0.05). After treatment, the levels of hs-CRP, homocysteine (Hcy) and complement 3 (C3) in the observation group were significantly lower than those in the control group (P<0.05). After treatment, the activated partial thromboplastin time (APTT), prothrombin time (PT) and thrombin time (TT) in the observation group were significantly longer than those in the control group (P<0.05), and the level of fibrinogen (FIB) was significantly lower than that in the control group (P<0.05).【Conclusion】Half-dose reteprase combined with resuvastatin in the treatment of acute STEMI can effectively improve the cardiac function and coagulation function of the patients, and reduce the level of serum hs-CRP,Hcy and C3in patients with acute STEMI.