According to one embodiment of a method for measuring blood vessel elasticity, adapted to a sphygmus oscillation signal measured by pressure sensor of blood pressure equipment. This method for measuring blood vessel elasticity includes: uses the sphygmus oscillation signal to calculate systolic blood pressure and diastolic blood pressure extracts a sphygmus signal after corresponds to the diastolic blood pressure finds the maximum slope of the extracted sphygmus signal finds a first time by using the maximum slope down to a reference pressure then finds a second time by using the maximum slope down to the lowest point of the extracted sphygmus signal and compares the first time and the second time to get the indicator of blood vessel elasticity.
