Abstract: This study mainly analyzed the correlation of the parameters such as diastolic blood pressure (DBP)， systolic blood pressure (SBP)， pulse pressure (PP)， subendocardial viability ratio (SEVR)， waveform parameter (k)， stroke volume (SV)， cardiac output (CO) and peripheral resistance (R_S) of aortic pulse wave and brachial pulse wave invasively measured. Correlation analysis was performed on invasive central aortic parameters and brachial artery parameters of 40 patients who needed coronary arteriography. With the paired t-test and Bland-Altman method， these parameters extracted from the central pulse wave invasively measured were compared with the parameters of central aortic pulse wave caculated by a regression equation and a model. Results and conclusion: in addition to the k value， the above parameters of the central pulse wave and the brachial pulse wave invasively measured had positive correlation; DBP and SEVR had the same consistency in the two estimation methods， and the regression equations of the two parameters were expressed by Y′=a+bx. The DBP， SBP， PP， SEVR， SV， CO also can be calculated by the regression equation， but its accuracy is worse than that of the transfer function model.

Key words: parameters of central aortic pulse wave, parameters of brachial pulse wave, regression equation, transfer function, correlation