Patients feel that the heart is so tired, which can be caused by a variety of reasons, the common reasons are as follows: 1, cardiovascular stenosis: cardiovascular stenosis may manifest as chest pain, chest tightness, panic, shortness of breath, and some patients will experience the feeling of tired heart. To diagnose whether there is stenosis, coronary angiography or coronary CT should be done to further determine the degree of stenosis and the site of stenosis. 2. enlarged heart or decreased ejection fraction: cardiac ultrasound should be done to observe whether there are changes in the structure of the heart, and some patients with enlarged heart or decreased ejection fraction will also have the feeling of tired heart. 3. arrhythmias: to detect arrhythmias, electrocardiogram or 24-hour The heart rhythm of a part of patients with arrhythmia will show the feeling of heart tiredness due to heart panic, another part of patients with myocardial injury appear heart tired to do myocardial enzymatic examination.