Objective: To observe the hypotensive effect on DBP with nifedipine tardy-released tablets. Methods Eighty cases of hypertesion in the elderly were randomly divided mifedipine treatmental group and captopril group as control. Results The dffecti of nifedipine was siginficant than captopriil (P0.01).Condusions Nifedipine tardy-released tablet has certain valule in clinical treatment.