Low myoglobin generally has no special clinical significance and simply represents a decrease in oxygen-binding protein in the myocardium, which is due to myocardial metabolism and is generally not a major problem. The index of myoglobin is high when acute myocardial infarction, polymyositis, myocardial ischemia, myocarditis, insufficient blood supply to the heart, dermatomyositis and other diseases are present. If high myoglobin is detected, it is necessary to promptly check myocardial enzyme spectrum, electrocardiogram, infarct triad, troponin and other indicators to clarify the specific cause and actively give symptomatic treatment. If troponin is high at the same time and the ECG shows ST-segment elevation, thrombolysis and interventional embolization can be performed to prevent further aggravation of the degree of myocardial infarction.