Blood pressure and artery stiffness are very important physical parameters and the measure to them is very important in clinic.This paper discribes the design of a kind of blood pressure and arterial stiffness measuring apparatus .The measuring algorithm based on oscillometric method is also discussed.The apparatus inherits the merits of traditional blood-pressure meter,it can measure blood pressure and heart beat rate.Furthermore,it can give the information of the measurer's arterial stiffness and provides reference to doctor to determine the measurer's cirrhosis level .