Coronary artery mild stenosis can control how many years, with uncertainty, if after standardized treatment, may be able to control a long time the disease no longer progress; on the contrary, it may gradually progress, but the control of the number of years there is no specific data. 1. Can: coronary artery stenosis is generally caused by coronary artery atherosclerosis, resulting in narrowing of the lumen, if the mild stenosis indicates that the degree of atherosclerosis is relatively mild, and does not cause significant myocardial ischemia, if you follow the doctor’s instructions for standardized drug therapy, such as aspirin, atorvastatin, reserpine, isosorbide mononitrate and so on, it may be able to control a long time the disease is no longer progressive. 2. Can not: If the patient can not follow the doctor’s instructions for standardized treatment, atherosclerosis may be further aggravated, the degree of stenosis increases, and eventually may completely block the coronary artery, resulting in myocardial infarction, but the specific how long there is no specific statistics. When there is a mild narrowing of the coronary arteries, a light diet, abstaining from smoking and alcohol, paying attention to rest and moderate exercise can relieve the condition to some extent.