AIM:To analyze the correlated risk factors of diabetic retinopathy(DR) in type 2 diabetes mellitus.METHODS:Three hundred cases with type 2 diabetes mellitus were divided into three groups:nondiabetic retinopathy group(NDR group),nonproliferative diabetic retinopathy group(NPDR group)and proliferative diabetic retinopathy group(PDR group)to analyze its correlated risk factors.RESULTS:Compared with NDR group,course of disease,systolic blood pressure(SBP),diastolic blood pressure(DBP),fasting plasma glucose(FPG),2h plasma glucose(2h PG),HbA1c and 24 hour urinary protein excretion in NPDR group and PDR group were significantly higher(P<0.05);the result of logistic regression showed that diabetic duration and SBP were independent risk factors of DR.CONCLUSION:Diabetic duration and SBP are independent risk factors of DR.