Coronary artery calcification is caused by calcium deposition after the formation of atheromatous plaques. For patients with stable plaques, they usually do not die, but if the plaque ruptures, an acute myocardial infarction may occur, leading to sudden death. 1. Coronary artery calcification and coronary atherosclerosis is due to the formation of atheromatous plaques by lipid deposition after endothelial damage, and calcium deposition within the plaque leads to hardening of the plaque and the vessel wall. 2. Atherosclerotic plaque can be divided into stable plaque and unstable plaque. For stable plaques, the risk of rupture is low and does not affect the patient’s survival, and generally does not cause the patient’s death. 3. For unstable plaques, the lipid pool is large and the surface fiber cap is small, it is easier to rupture and form thrombus to block the blood vessels leading to acute coronary syndrome, this situation, if the rescue is not timely, there will be sudden cardiac death. Coronary artery calcification, need to actively consult the doctor, follow the doctor’s instructions for reasonable treatment.