Coronary angiography is the “gold standard” for the diagnosis of coronary heart disease and coronary artery disease, and with the development of technology and the innovation of medical equipment and instruments, this technology is becoming more and more mature. In the past 10 years or so, coronary angiography via radial artery route has been commonly performed. Li Yufeng, Department of Cardiovascular Medicine, Dongzhimen Hospital, Beijing University of Traditional Chinese Medicine The transradial route has many advantages, most notably, less pain and fewer complications for the patient. If the coronary artery is normal, the patient can go home after a few hours of observation; if the coronary artery is not severely stenosed, the patient only needs to take medication to control it; if the coronary artery is severely stenosed, stent implantation may be required.