I. Must pay attention to high blood lipids 1. 2011 version of the AHA guidelines have raised lipid-lowering therapy to a very important position. All patients with CABG, except those with contraindications, should receive statin therapy. Patients with CABG should receive adequate doses of statins to reduce LDL to less than 100 mg/dL (2,59 mmol/L) and reduce LDL by at least 30%. 3. Patients at high risk for CABG should receive statin therapy to reduce LDL to 70 mg/dL (1, 81 mmol/L). 4.Patients with emergency/sub-emergency CABG who are not receiving statin therapy should start high-dose statin therapy immediately. 5. Patients without side effects of drug therapy should not discontinue statin or other lipid-lowering drug therapy before or after CABG. Preoperative carotid artery examination 1. For preoperative patients, carotid ultrasonography is routinely performed. 2.Special attention should be paid to high-risk factors (age >65y, left main stem stenosis, peripheral artery disease, history of cerebrovascular disease (transient ischemic attack, stroke, etc.), hypertension, history of smoking, diabetes mellitus, etc.). 3, If there is a history of cerebrovascular disease, plus unilateral severe carotid stenosis (>50%), carotid revascularization is considered. 4.If there is no history of cerebrovascular disease and there is bilateral severe carotid stenosis (>70%) or unilateral severe stenosis + contralateral occlusion, consider carotid revascularization. Glucose control and hormone therapy 1.Continuous intravenous application of insulin to control blood glucose ≤10.0mmol/L in the early postoperative period while avoiding hypoglycemia can reduce the incidence of adverse events after CABG, including deep retrosternal infection. 2.The effectiveness of continuous intravenous application of insulin to control intraoperative target glucose ≤140 mg/dL (7.8 mmoL/L) is unclear. 3. Postmenopausal hormone therapy (estrogen/progestin) should not be used in female patients undergoing CABG. 4. Application of perioperative receptor blockers 1. For patients with good cardiac function and stable circulation, β-blockers should be taken preoperatively and oral β-blockers should be given as early as possible after surgery, with the main purpose of reducing the incidence of perioperative atrial fibrillation, as well as decreasing myocardial oxygen consumption and reducing perioperative myocardial ischemia. 2.If such patients cannot take oral medication, intravenous medication can be used. 3.For patients with LVEF <30% and unstable circulation, there is a risk of entering the vicious circle of acute heart failure, so use any drug with negative inotropic force with caution.