Coronary heart disease (coronary atherosclerotic heart disease) is a common and frequent disease of the cardiovascular system. With the change of lifestyle, the incidence of coronary heart disease in China also continues to increase. It has become the most common cardiovascular disease in China. Coronary artery bypass grafting is one of the main methods of treating coronary heart disease, using autologous vessels in the aorta and coronary can manifest as angina pectoris, myocardial infarction and sudden death, Su Gang, Cardiovascular Surgery Department of the First Affiliated Hospital of Zhengzhou University