Inclusion Criteria:  1. Age ≥ 18 years old. 2. Acute anterior wall myocardial infarction (ECG indicates acute anterior wall, acute anterior wall myocardial infarction, acute extensive anterior wall myocardial infarction). 3. The onset time of chest pain was less than 12 hours, and agreed to emergency PCI treatment. 4. Be able to understand and sign informed consent voluntarily.  Exclusion Criteria:  1. Patients who cannot undergo PCI treatment after coronary angiography, or those who fail to open blood vessels, or refuse to undergo PCI treatment. 2. Those whose coronary angiography results indicated myocardial infarction caused by non-coronary artery disease or residual stenosis < 50% after reanalization of myocardial infarction without PCI treatment. 3. Patients with old anterior wall myocardial infarction. 4. Previous history of cardiac insufficiency. 5. Both anterior descending stent implantation, stent restenosis or stent thrombosis. 6. Symptomatic hypotension, systolic blood pressure < 90mmHg (still < 90mmHg with IABP) 7, body temperature > 38.5℃, or with serious infectious diseases (severe myocarditis, severe pneumonia, severe urinary tract infection, etc.). 8. Severe other organ diseases (renal insufficiency: EGFR < 30ml/min, severe liver insufficiency, moderate and severe anemia, malignant tumor, hematologic system diseases, etc.). 9. Known or suspected allergy to the active or inactive ingredients of the drug under study. 10. Participated in other drug clinical trials within 3 months before the trial.