Coronary angiography is the use of a contrast heart catheter, through the femoral artery of the thigh or the radial artery of the forearm to deliver the catheter to the opening of the coronary artery, through the catheter to inject contrast into the coronary artery, directly observe the location of coronary artery lesions, the degree of stenosis, the nature of the lesion, but also to understand the function of the heart and the presence of collateral circulation between the vessels, the presence of anatomical malformations. This test is an important guide to determine whether the lesion requires surgery, interventional angioplasty or drug treatment. Currently, this test is commonly performed in large and medium-sized hospitals in China and is very safe and painless when performed by an experienced physician. However, because it is an invasive test, some complications can occur in a few patients during the procedure. It is the only diagnostic method that can directly observe the morphology of the coronary arteries, and is called the “gold standard” in the medical community. The coronary angiography technique should follow the principle of examination, and it is a very common phenomenon to blindly recommend or apply interventional techniques. Regardless of whether the condition requires it or not, some doctors introduce or recommend patients to do coronary angiography at every turn, and some patients or family members also take the initiative to request interventional examinations or treatments. If coronary artery disease is considered, the principle of simple first and then complex, non-invasive first and then invasive examination should be followed. Heart disease is a kind of dangerous cardiovascular disease, the development of the disease to the late stage, is potentially fatal, must be vigilant, active treatment, early prevention and control measures, a detailed understanding of what are the rehabilitation care measures for heart disease patients, is necessary for better treatment and early recovery of health. When choosing the treatment of heart disease, it is necessary to vary from person to person, to find the cause of the disease, the right treatment, for faster and better treatment.