Abstract: Objective To study the relationship between postprandial triglyceride and the prevalence of vascular complications in type 2 diabetic patients.Methods A total of 44 type 2 diabetic patients were divided into three groups according to the level of fasting and fouth hour postpandial triglyceride (TG and TG 4h):group 1 of 19 fasting normotriglyceridemic type 2 DM patients whose TG4h≤2.0mmol/L,group 2 of 14 the same whose TG4h>2.0 mmol/L and group 3 of 10 fasting hypertriglyceridemic type 2 DM patients.TG were measured before and 2,4,6,8 hours after a meal.Results The prevalences of microvascular complications were 21.05%、42.85% and 70% and macrovascular complications 10.52%,57.14% and 80% respectively in the three groups with significant difference between group 1 and group 2 ( P <0.05),but there was no significant difference between group 2 and group 3 ( P >0.05) in the prevalences of macrovascular complications.Conclusion The degree of diabetic macrovascular complications in the stage of fasting normotriglyceridemia but postprandial hypertriglyceridemia in type 2 diabetes mellitus are as severe as ones in the stage of fasting hypertriglyceridemia.