An electrocardiographic measurement device according to the present invention includes a sensor capable of measuring an electrocardiographic waveform, an LED display unit, and a control means that executes a measurement process of the electrocardiographic waveform by controlling the sensor and controls the LED display unit to blink during the measurement process, wherein when the control means causes the LED display unit to blink during measurement of the electrocardiographic waveform by the sensor, the control means performs control such that luminance of the LED display unit changes with a predetermined gradient or more with respect to time.