A measurement device for measuring psychology stress index and blood pressure, the measurement device comprising a micro-processor unit, a display output unit, a button input unit, a pressurizing motor unit, a pressure sensing unit, an airbag unit and a quick exhaust valve unit, wherein the micro-processor unit is configured to enter into a psychology stress measurement mode according to an operation of the button input unit, whereby the micro-processor unit is configured to control the pressurizing motor to pressurize the airbag unit with a variable speed and during this pressurization to measure a pressure signal of the pressure sensing unit and to determine if the pressure signal is a pulse signal, and when the pressure signal is determined as a pulse signal, the micro-processor unit is configured to control the pressurizing motor unit to stop pressurizing and to measure the pulse signal to calculate a psychology stress index, and the display output unit is configured to output the psychology stress index and subsequently, the micro-processor unit is configured to control the quick exhaust valve unit to release the pressure of the airbag unit, and the micro-processor unit is configured to enter into a blood pressure measurement mode according to operation of the button input unit, whereby the micro-processor unit is configured to control the pressurizing motor unit to pressurize the airbag unit with the variable speed, and subsequent to the measurement of a maximum pulse amplitude of the pulse signal by the pressure sensing unit, the micro-processor unit is configured to control the pressurizing motor unit to continuously pressurize until the pulse amplitude of the pulse signal is dropped to lower than a pressurization stop amplitude, and the micro-processor unit then is configured to control the pressurizing motor unit to stop pressurizing, and to calculate a measurement result according to an amplitude array of the pulse signal and a corresponding pressure array, and the display output unit is configured to output the measurement result and subsequently, the micro-processor unit is configured to control the quick exhaust valve unit to release pressure of the airbag unit; wherein under the psychology stress measurement mode, the micro-processor unit is configured to determine whether the pressure signal is the pulse signal, according to characteristics of wave crest, wave trough, amplitude or a combination thereof of the pressure signal; wherein under the psychology stress measurement mode, the micro-processor unit is configured to capture interval data of the pulse signal within a period time after the pressurizing motor unit stops pressurizing, and to calculate a standard deviation of all normal to normal intervals (SDNN) and a root mean square of the successive differences (RMSSD) according to the interval data, and to determine a ratio of SDNN and RMSSD to be the psychology stress index. wherein under the psychology stress measurement mode, the micro-processor unit is configured to determine whether the pressure signal is the pulse signal, according to characteristics of wave crest, wave trough, amplitude or a combination thereof of the pressure signal; wherein under the psychology stress measurement mode, the micro-processor unit is configured to capture interval data of the pulse signal within a period time after the pressurizing motor unit stops pressurizing, and to calculate a standard deviation of all normal to normal intervals (SDNN) and a root mean square of the successive differences (RMSSD) according to the interval data, and to determine a ratio of SDNN and RMSSD to be the psychology stress index.