PROBLEM TO BE SOLVED: To provide an apparatus and a method for simply and easily evaluating vascular endothelial functions with high precision.SOLUTION: The apparatus includes: a first cuff 11, to be wound around a first site of the body of a subject a second cuff 51, to be wound around a second site of the body of the subject a controller 20 that is a cuff controller for controlling a pressurization and decompression of the cuff a cuff pressure detector 31 for detecting the cuff pressure from an output of a pressure sensor 54 connected to the second cuff 51 a pulse wave detector 32 for detecting a pulse wave from the output of the pressure sensor 54 and an analyzer 33 for analyzing the detected pulse wave. The controller 20 performs continuous pressure stimulation on the first site of the body of the subject for predetermined time of period using the first cuff 11, and the analyzer 33 evaluates the vascular endothelial function by comparing the pulse waves detected before and after the continuous pressure stimulation is performed.COPYRIGHT: (C)2011,JPO&INPIT