The survival time of patients with coronary artery disease is mainly related to the patient’s own condition and whether he or she receives timely treatment. Most patients with stable angina who are treated early and do not have underlying disease can survive for many years because they have good cardiovascular function, but they are at risk of acute myocardial infarction or sudden death and need to be reviewed regularly. Stable angina with ventricular arrhythmia or conduction block has a poorer prognosis; diabetes mellitus, due to the impact of immunity, prone to infection, so the prognosis is significantly worse than that of people without diabetes mellitus; combined with hypertension, high blood pressure, poor control will cause damage to the endothelium of the blood vessels, which seriously affects the prognosis of coronary artery disease and the survival of the patient. For patients who do not receive standardized treatment, the survival time may be as short as a few weeks or months. It is recommended that patients with coronary artery disease should consult a doctor in time and receive standardized treatment under the guidance of a doctor in order to improve the survival period and quality of life.