Objective To study change of insulin resistance and beta-cell function of the patients in hyper-tension with normal glucose tolerance(NGT) to phthogonesis of type 2 diabetes mellitus(T2DM). Methods 84 pa-tients with hypertension were divided into NGT group,and groups of impaired glucose tolerance(IGT) with groups of T2DM. The blood pressure, height, weight, waist circumference, hip circumference, high-density lipoproteins (HDL-C)and total cholesterol(TC) ,fasting plasma glucose(FPG) and fasting plasma insulin(FINS) were measured to deter-mine the body mass index(BMI) ,waist/hip ratio(WHR) ,insulin secretion function[ including Homa β-cell function index(HBCI) and fasting β-cell function index(FBCI)] and insulin resistance level [ including Homa model insulin resistance index(IR) and insulin action index(IAI)] ,statistic comparison were measured between the groups of dif-ferent glucose tolerances. Results The BMI, WHR, diastolic blood pressure ( DBP), TC in IGT group and T2DM group were bigger or higher than those in NGT group ( P<0.05, P<0.01 ), the IAI, HOMA-IS and FBCI in T2DM group were lower than those in NGT group with these in NGT group were lower than those in NGT group( P<0.05 ,P<0.01 ). The HOMA-IR in IGT group and T2DM group were higher than those in NGT group with these in T2DM group were higher than those in NGT group. Conclusion T2DM group and IGT group had more insulin resistance level,sensitivity of insulin and islet β-cell function decrease than those in IGT group,the IGT group and T2DM group are analogous at the body weight is heavier, with waist/hips ratio, triglyceride level and DBP are higher than those in the NGT group in clinic.