The invention relates to a method and a device for noninvasive blood pressure measurement by means of two pressure cuffs (10, 20) each having one sensor (6, 8), the output signal of which is a function of the blood pressure to be measured and of the cuff pressure, characterized in that, first in a reference phase, the cuff pressure of at least one pressure cuff is varied and the maximum output signals of the sensor occurring at the systolic blood pressure are detected at the different cuff pressures, the dependence of the maximum output signal from the sensor (6, 8), occurring at the systolic blood pressure, on the transmural pressure is determined, and the curve of the reference phase quotient is determined as a function of transmural pressure and saved, then, in a measurement phase during a pulse beat, two signal values are determined at two different cuff pressures by means of a control unit, and a measurement phase quotient is formed from these two signal values, and, by comparing the measurement phase quotient with the saved reference phase quotient, the blood pressure is determined.
