In general, coronary artery disease requires coronary angiography. Coronary angiography is the gold standard for the diagnosis of coronary artery disease, through which it can reflect more intuitively the state of the blood vessels in the coronary arteries, to understand whether there are atherosclerotic plaques, whether there is luminal narrowing, and to accurately locate the site of narrowing, to see whether it has an impact on the blood supply. Coronary angiography can provide guidance for the treatment of coronary heart disease, i.e., the condition of the coronary arteries can be clarified by angiography so that the physician can provide appropriate treatment. If the coronary angiogram reveals mild atherosclerotic stenosis, it can be relieved by medication; if it reveals severe coronary artery stenosis, it can be treated by surgery. If symptoms related to coronary heart disease appear, you should go to the hospital in time to improve the coronary angiography and other imaging tests, in order to make a clear diagnosis and carry out targeted treatment as soon as possible.