If you suffer from myocardial ischemia, it may be more serious at night, because at night, the vagus nerve of the human body is more excited, and the catecholamine secretion is more, which will cause spasm of the coronary arteries as well as excessive secretion of hormones, leading to the aggravation of myocardial ischemia. Once this situation occurs, we should go to the hospital as soon as possible, through the electrocardiogram, cardiac ultrasound, coronary CTA and coronary angiography examination, to clarify the degree of coronary lumen narrowing, according to the degree of narrowing to determine the next step of the treatment plan, such as coronary stenting implantation of surgical bypass grafting treatment, these can achieve the purpose of alleviating myocardial ischemia. We also need to take cardiotonic and diuretic drugs, only in this way can the patient get well as soon as possible.