Imaging coronary stenosis treated with medication for one year, but also need to regularly monitor the electrocardiogram, dynamic electrocardiogram, blood biochemistry complete set. 1. Electrocardiogram (ECG): also known as general ECG, it can find out whether the heart rate is in an unstable state or not, and also the heartbeat frequency from it, as well as diagnose and localize coronary artery disease. 2. Ambulatory electrocardiogram (ECG): also known as 24-hour ambulatory electrocardiogram (AEK), which mainly monitors the specific changes in the heart rate over a 24-hour period to rule out various arrhythmias. It can also be used to assess the severity of coronary artery stenosis and the results obtained after treatment with medication. 3. Blood biochemistry set: It mainly includes blood routine, serum screening and myocardial necrosis markers, which can be evaluated according to myoglobin, troponin, as well as creatine kinase, isoenzymes, and blood leukocyte, erythrocyte, eosinophil index, to analyze the effect of disease control. Imaging coronary stenosis after one year of medication in addition to the above kinds of examination, but also need to do coronary arteriography, nuclear myocardial imaging, and so on, and combined with the diagnosis of the results of the appropriate adjustment of the treatment program.