In fact, this question is inappropriate, what causes coronary artery, itself people have coronary artery, this is very normal. I think your question should be what causes coronary atherosclerosis? Coronary atherosclerosis is generally referred to as coronary atherosclerosis, which is mainly related to age, that is, as we grow older, the coronary arteries are degenerated and will appear coronary atherosclerosis. In addition, there is a great relationship with some risk factors, and then there is a great relationship with genetic factors, such as family aggregation, such as some risk factors are mainly hypertension, high blood pressure, obesity, smoking, heavy alcohol consumption, it is easy to cause coronary atherosclerosis, so usually focus on prevention, such as the external environment of such factors can be eliminated as far as possible, so as to slow down the development of coronary atherosclerosis In this way, the development of coronary atherosclerosis can be delayed and the life expectancy can be extended.