Coronary artery calcification （CAC）, as detected with computed tomography, identifies the presence of coronary artery atherosclerosis. It is positively associated with coronary heart disease （CHD） and cardiovascular disease events. In general, the established risk factors for coronary calcification were age, elevated blood pressure, diabetes mellitus, etc. CAC may also be influenced by life styles, such as smoking, coffee and tea consumption. Understanding how these various factors differentially influence the development of CAC may provide important ways to prevent the presence and progress of CAC.