Objective This study aimed to determine the prevalence rates of conventional risk factors and to analyze the features of coronary lesions in patients with coronary heart disease (CHD).Methods 3765 CHD cases were collected from the General Hospital of PLA in Beijing from 2009 to 2010 (2661 men,1104 women).All the CHD patients enrolled in our study were diagnosed through angiography.Clinical and angiographic data of CHD patients were collected.After stratification on age and sex of the patients,logistic analysis method was used to evaluate the prevalence rates on conventional risk factors and to analyze the features of coronary lesions on CHD.Results ( 1 ) More than two risk factors and advancing age of onset were commonly seen in female CHD patients.In those premature female CHD patients (age ＜45 years),there was a high proportion the habit of smoking.With the increase of age,proportions of patients with diabetes mellitus and hyperlipidemia also significantly increased.For male patients at different age,the proportions of smoking were high.(2) Data from logistic analysis suggested that diabetes mellitus could increase the prevalence of CHD on women (OR=2.05,95％CI:1.49-2.81,P＜0.001),and smoking was a risk factor for men (OR=9.27,95％CI:7.68-11.19,P＜0.001).(3) Along with the increase of age,female patients appeared to have more coronary vessel injures or severe coronary artery lesions.Different from the females,there was no change could seen on the characteristics of coronary lesions at different age for males.Conclusion Prevalence rates on risk factors and the characteristics of coronary lesions appeared to be different with age.Diabetes mellitus and hyperlipidemia seemed to impact more on women while smoking seemed to impact more on men.