Objective: Risk factors for coronary heart disease complicated with type 2 diabetes and coronary artery lesion characteristics analysis and research.Methods: Colected in our hospital from 2011 October to 2013 October were analyzed between the two years of 478 patients diagnosed as coronary heart disease, diabetes melitus patients with 104 cases, the other 374 cases were non diabetes patients, respectively, for the risk factors of diabetic and non-diabetic groups in patients with coronary heart disease and clinical characteristics were compared and analyzed.Results: Diabetic patients with coronary heart disease, hypertension, high triglyceride, disease incidence was significantly higher than that in non diabetic patients with coronary heart disease, in which P<0.05, the difference was statisticaly significant.Conclusion: The more risk factors in patients with coronary heart disease complicated with diabetes and coronary heart disease, the disease is more serious.