After acute myocardial infarction occurs, myocardial cells undergo ischemia, injury, and necrosis, and the area of necrosis gradually expands with time, which may lead to serious arrhythmias, heart failure, cardiogenic shock, and other complications that endanger life. In recent years, the treatment of acute myocardial infarction has undergone fundamental changes. Drug thrombolysis, emergency PTCA, and emergency surgical bypass surgery can recanalize the occluded vessels, reconstruct blood transport, and save patients’ lives. However, these treatments must be based on early diagnosis and early treatment. 1.2% mortality rate if treated within 60 minutes of AMI onset, and 6% mortality rate if treated at 6 hours, so in principle the above treatments should be completed within 6 hours, and not more than 12 hours at most. Therefore, it is proposed that time is the heart muscle and time is life.