STUDY DURATION It will take 12 months to collect data of 2,400 cases in 20 CHD intervention centers of China and following 9 months to compete QCA and risk factors analysis STUDY PROCESS The statistical analysis will include all the materials of cases. We will describe the basic history characteristics of patients, test parameters and the imaging characteristics of coronary angiography. Continuous variables will be described by number, mean, standard deviation (SD), median, minimum value and maximum value. Numeric variables with normal distribution will be described by mean and SD. Continuous variables will be compared by student test (normal distribution) and Wilcoxon rank sum test (skew distribution). Categorical variables (nominal variables/rank variables) will be described as frequency and percentage, which can be compared by Chi square test or Fisher exact test. Logistic multiple regression can be used to evaluate the risk factors of coronary disease progression in Chinese patients, among which the possible risk factors selection is based on clinical and statistical decision. Receiver operating characteristic(ROC) curve can be used to establish risk evaluation model of coronary disease progression and evaluate its value. The incomplete data will not be analyzed.