Bypass surgery is performed primarily to prevent myocardial ischemia, minimize the risk of myocardial infarction, improve the patient’s quality of life, and enable the patient to return to as normal a life as possible. Appropriate exercise can help recover heart function, improve blood pressure, control blood sugar and promote blood circulation. However, exercise needs to vary from person to person because each patient’s age, physical strength, preoperative cardiac function status, lesion type, and lifestyle habits are different, making it difficult to set a uniform standard. It is generally believed that, after the end of surgery, the patient is awake and removed from the tracheal tube, you can start to carry out simple limb, respiratory function exercise, such as deep breathing in bed, coughing, turning over, limbs of the simple stretching activities. Deep breathing and coughing is an action that every patient must complete, which can promote alveolar expansion, prevent pulmonary atelectasis and lung infection, and improve the oxygenation of the body. On the first day after surgery, most patients cannot remove the drainage tube, and their activities are generally limited to the bed, and on the basis of the day of surgery, their activities have increased, and they can sit up and eat on their own. On the second postoperative day, after removing the drainage tube, most patients can go down to the ground and start to walk with the help of others, or walk with their hands on the bed, and if the situation permits, they can go outside the ward to do activities. In addition, try to eat, infusion in the sitting position, do not always lying on the bed. On the third day after the operation, patients can basically move freely according to their own conditions, and they can make an activity arrangement to gradually increase the length of walking distance. Most patients can be discharged from the hospital one week after surgery. After being discharged from the hospital, they can carry out physical exercise in an orderly manner according to their previous physical condition, such as taking a walk, doing simple household chores, going out for shopping, and exercising appropriately. Overall speaking, we need to grasp a degree, that is, to be gradual, according to the strength. To not feel fatigue shall prevail, such as fatigue and weakness, chest tightness, panic, you must rest, and even oxygen or take some coronary drugs, such as nitroglycerin. Activity time is gradually extended, but do not do it on an empty stomach or after a full meal. Exercise in too cold or hot weather must also pay special attention to warmth, hydration, generally 1-2 months after the operation can be restored to the amount of exercise before the operation. If the situation permits, you can carry out more strenuous exercise, such as traveling, climbing, running and so on.