Inclusion Criteria:  Aged 18-75 years, gender unlimited; According to the guidelines for diagnosis and treatment of acute ST segment elevation myocardial infarction (2019), patients with acute anterior ST segment elevation myocardial infarction were diagnosed; Patients with primary acute myocardial infarction; Patients who completed PCI reperfusion treatment within 12 hours after the onset of the disease; Subjects participated in the study voluntarily and signed informed consent.  Exclusion Criteria:  Patients with previous cardiac insufficiency caused by other diseases (valvular heart disease, congenital heart disease, pericardial disease, arrhythmia, other non cardiac causes); The patients underwent coronary artery bypass graft（CABG） within 12 weeks; Patients undergoing cardiac resynchronization; Patients with left ventricular outflow tract obstruction; Patients with myocarditis; Patients with uncontrolled severe arrhythmia; Patients with aortic aneurysm; Patients with serious liver, kidney, blood system, mental disease or systemic disease; Significant liver and kidney dysfunction (ALT > 2.0 times the upper limit of normal value; creatinine > 1.5 times the upper limit of normal value); Patients with serum potassium > 5.5mmol/l; Uncontrolled hypertension (higher than 180 / 110mmhg); Pregnant or lactating women; Patients allergic to compound Danshen Dropping Pills; 1 Patients participating in clinical studies of other drugs.