The appropriate time for cardiovascular patients to exercise should be at 4-5 pm, when the body’s ability to adapt and the coordination of the whole body is stronger, especially the heart rate and blood pressure are more stable, suitable for physical exercise. Research shows that the incidence of cardiovascular and myocardial strain is highest at 6-12 am. Sympathetic nerve activity increases during this time, which can lead to increased heart rate, increased myocardial contractility and increased blood pressure, resulting in increased myocardial oxygen consumption and accelerated cardiovascular blood flow, which can easily induce malignant arrhythmia or heart disease aggravation. Therefore, after the lunch break is the best time for cardiovascular patients to exercise, it is recommended that patients exercise at 4-5 p.m., when plants have a day of photosynthesis, sufficient oxygen content, moderate temperature, conducive to exercise. In addition, if a cardiovascular patient has an angina attack, or other clinical manifestations of discomfort, exercise is not recommended. Only after the condition is stabilized can exercise be performed appropriately.