Damage to the myocardium can be very harmful to the organism. Long-term damage to the myocardium causes cardiac ischemia, hypoxia, myocardial degeneration, fibrosis, necrosis and so on. In serious cases, it can cause heart failure, heart rhythm disorder, cardiogenic shock, and even sudden death, resulting in a threat to life safety. There are many causes of myocardial damage, according to different causes, combined with typical clinical symptoms, after ECG, myocardial enzyme examination, a clear diagnosis under the guidance of the doctor, the routine application of drug therapy to improve the damaged state of the myocardium, so as to avoid the occurrence of serious damage, which affects the health of the person, and life-threatening.