Myocardial ischemia is very common in middle-aged and elderly people. It can be mild or severe. In mild cases, it is not directly life-threatening. In severe cases, it can cause angina pectoris or even myocardial infarction, which is life-threatening. Therefore, myocardial ischemia must be understood and treated objectively and correctly, pay attention to life and behavioral intervention, eliminate or reduce risk factors, be positive and optimistic, eliminate tension and pessimism, and at the same time go to the hospital as early as possible for active treatment.