Coronary artery bridging surgery does not cure coronary artery disease, but only relieves myocardial ischemia due to coronary artery stenosis, improves patients’ symptoms, improves patients’ quality of life, and tries to avoid acute cardiovascular events. The American Heart Association’s guidelines state that the probability of a patient dying from coronary artery disease after undergoing coronary artery bridging surgery is approximately 50%. There are two reasons for this, namely, the continued development of atherosclerotic lesions in the coronary arteries themselves and new lesions and their development on the newly constructed vascular bridge. Therefore, how to slow down the progression of atherosclerosis after surgery becomes the main task of postoperative treatment. Treatment of the underlying disease includes lowering blood lipids, controlling blood glucose, controlling blood pressure, quitting smoking and limiting alcohol, proper medication and dietary adjustments, avoiding emotional fluctuations, and maintaining a regular routine, all of which can slow down the progression of the lesions. After bypass surgery, patients should avoid eating the following foods: high cholesterol foods, including: all kinds of animal offal, all egg yolks, fish roe, shrimp and crab (especially crab yolks), shellfish, scaly sea fish (scallops, squid); high-fat foods, including all kinds of fried foods, avoid excessive intake of cooking oil; saturated fatty acids, mainly all kinds of animal fats, such as lard, tallow, suet, butter; foods containing a large number of trans fatty acids, such as cakes, pearls, sheepshead oil and butter; foods containing a large number of trans fatty acids, such as cakes, pearls, sheepshead oil and butter. Foods containing a lot of trans fatty acids, such as cakes, pearl milk tea, ice cream, etc.. An important complication of diabetes is atherosclerosis of small and medium-sized arteries, which is associated with coronary heart disease in many patients. An important complication of diabetes is atherosclerosis of the small and medium-sized arteries, which is associated with coronary heart disease in many patients. Long-term patency of venous bridges can be significantly improved with oral aspirin initiated within 48 hours of surgery and continued over a long period of time. Clopidogrel also has the effect of aspirin, but it is more expensive to take over the long term and increases the likelihood of bleeding when taken concurrently with aspirin. Statin lipid-lowering drugs are the most important advance in the pharmacologic treatment of coronary heart disease in the last 30 years. Like aspirin, statins can significantly improve the long-term patency of venous bridges. The American Heart Association’s guidelines recommend that patients undergoing coronary artery bridging surgery for coronary artery disease need to take statin lipid-lowering drugs if there are no contraindications, regardless of whether or not their blood lipids are normalized after the surgery, and in our hospital they are usually started at the same time as aspirin. After taking the medication, it is important to pay attention to regular liver function tests, especially for patients who have not taken them before surgery. We have had cases of patients taking statins with liver function impairment misdiagnosed as hepatitis by the local hospital. At the same time, effective control of ventricular rate is also an issue that needs to be closely monitored in the postoperative period. Currently, beta-blockers have been widely used, and vital signs such as pulse need to be detected during the application process.