The overall objective of the High Risk Population of Cardiovascular Disease in Hubei Province (Coronary Heart Disease With Diabetes) Screening and Intervention Program（CCDInT） will be carried out in medical institutions in 14 prefecture level cities (prefectures) in Hubei province that could meet the test requirements. A total of 16,000 individuals aged ≥40 years with coronary heart disease with diabetes will be recruited into the study. Study participants will be followed in 1 year for some study outcomes. The main purpose of this study is to verify that the protocol treatment group is more effective than the conventional treatment group in reducing the incidence of composite cardiovascular disease (cardiovascular death, non fatal myocardial infarction, non fatal stroke, hospitalization for heart failure, and readmission for acute coronary syndrome) in patients with coronary heart disease and type 2 diabetes. In addition, the investigators will further study the genetic mechanism of compound cardiovascular events from the molecular genetic level, and explore the contribution and impact of genetic diversity on the treatment effect. At the same time, explore and establish a cardiovascular disease prevention and control system and effective mechanism under the leadership of provincial and municipal health administrative departments, organized by provincial prevention and control centers, and guided by municipal and state prevention and control centers, which provide theoretical and experimental basis for formulating strategies for large-scale intervention of related diseases, so as to improve the prevention and control status and effect, and strive to reduce the disease and social burden.
High Risk Population of Cardiovascular Disease in Hubei Province (Coronary Heart Disease With Diabetes) Screening and Intervention Program（CCDInT）is a randomized controlled study to verify that protocol treatment group is more effective than the conventional treatment group in reducing the incidence of composite cardiovascular disease (cardiovascular death, non fatal myocardial infarction, non fatal stroke, hospitalization for heart failure, and readmission for acute coronary syndrome) in patients with coronary heart disease and type 2 diabetes.