At present, the gold standard for the diagnosis of coronary heart disease is coronary angiography. Coronary angiography can show the degree of stenosis, the site of stenosis, whether there are plaques, calcified foci, etc. However, it should be noted that the test is invasive. In addition to coronary angiography, there are various other means to assist in the diagnosis of coronary artery disease, such as the patient’s clinical presentation, electrocardiogram, ultrasound, coronary CT, myocardial nuclear imaging, and so on, which need to be selected according to the patient’s specific needs. In the absence of special contraindications, “coronary angiography” is generally chosen for confirmation of the diagnosis. Specific diagnosis and treatment should follow the doctor’s instructions.