1, spiritual and ideological preparation Once a patient with coronary artery disease is admitted to the hospital to prepare for coronary artery bypass graft surgery, the first thing is to understand their condition, the need for surgical treatment, surgical methods, surgical trauma, surgical results and precautions before and after surgery and have a clear understanding and a correct understanding, put down the burden of thought, do not be afraid of surgery, but also to avoid mental tension and anxiety. Actively cooperate with the doctor’s treatment. Some patients are afraid of severe pain and poor healing when they see a long incision, and once they hear that they have to saw open the sternum, they think it is “cutting open the belly”, so they are extremely nervous and fearful, and they cannot sleep at night and do not eat well. Often due to excessive tension and angina and even myocardial infarction, extremely serious even after entering the operating room induced ventricular fibrillation and death. In fact, a long incision is only a flesh wound, and the sawed sternum is immediately well fixed, much less traumatic than a traumatic fracture. Moreover, modern anesthesia technology can basically eliminate postoperative pain. Therefore, there is no need to be nervous and anxious before and after the operation, and maintaining an optimistic mental state and a relaxed mood can not only reduce the occurrence of angina pectoris but also facilitate the postoperative recovery. 2, the preparation of general living goods Although now the hospital can basically provide daily necessities and do not need family members to accompany, but bring some of their usual items such as toothpaste, toothbrush, towels, combs, etc. is not only conducive to their own habits, but also more conducive to health. Bring a small record player to listen to music not only helps your physical and mental health but also helps you to keep abreast of current news. At the same time, we remind you that it is best to bring nitroglycerin-type first aid drugs for emergency self-help. 3.Pre-operative medication and other preparations Patients with coronary artery disease generally take anti-platelet drugs such as aspirin and Bamil before surgery. If the condition is stable, anti-platelet drugs should be stopped one week before surgery to reduce bleeding during surgery. If angina is unstable, low molecular heparin may be switched. Fasting after 10 p.m. the day before surgery, or at least 6 hours before surgery if it is an afternoon surgery. Application of antibacterial soap for bathing before surgery can reduce the chance of incisional infection. If you have a history of smoking or chronic obstructive pulmonary disease, you should practice deep breathing, coughing and coughing up sputum before surgery to avoid postoperative lung infection. If there is a combination of diabetes mellitus, blood glucose should be controlled at a normal level as much as possible before surgery to reduce postoperative sternal and mediastinal and leg incision infections. If hypertension is combined, blood pressure should also be controlled at a normal level as much as possible before surgery to prevent and avoid intraoperative and postoperative cerebrovascular accidents. Oral Valium 5mg or intramuscular Valium 10mg can be given the night before surgery to facilitate the elimination of preoperative mental tension and adequate rest. All these treatments should be carried out under the guidance of an experienced doctor, and the medication should be used correctly according to the medical prescriptions, do not increase or decrease the medication by yourself, otherwise it will cause adverse consequences.