Objective To observe the treatment effect of renal function and blood pressure in patient with blood pressure morning surge.Methods 34 patients take levoamlodipine 2.5 mg/q orally.35 patients take Fosinopril 10 mg/q orally.35 patients take Fosinopril lOmg/q and levoamlodipine 2.5 mg/q orally,continuing 12 months. Blood pressure,urinary albumin excretory rate,scrllm creatinine,urinary creatinine and calculated creatinine clearance at base line were measured.Results Blood pressure (P<0.01) and urinary albumin excretory rate (P<0.01) were decreased by compare to pretherapy in three groups.Post-treatment,urinary albumin excretory rate was reduced from 103.8±44.2 to (84.6±37.5)μg/min in the first group,from 102.9±45.4 to(82.7±38.4)μg/min in the second group,and from 109.8±40.5 to(51.2±40.1)μg/min in the last group.The difference for urinary albumin excretory rate was significant between prior treatment and post-treatment in every group (P<0.05).It is the same between the first group and the second.The difference for urinary albumin excretory rate was significant between the first group and the third group (P<0.01).The difference was significant between the second groud and the third group (P<0.01).Post-treatment,calculated creatinine clearance rate was increased from 84.6±7.4 to 88.2±7.1 in the first group,from 81.4±2.5 to 84.5±4.2 in the second group,and from 79.1±6.8 to 109.6±16.1 in the last group.The difference for calculated creatinine clearance rate was significant between prior treatment and post-treatment in the third group (P<0.01).Conclusion Blood pressure (P<0.01) and urinary albumin excretory rate were decreased by three methods.Three methods all protect renal function,and the third method is the best.