To provide an APD (Amplitude Probability Distribution) measurement device allowing even an operator poor in knowledge of APD measurement to easily perform the APD measurement.

In an APD measurement device 1 analyzing frequency components of a signal to be measured, detecting the amplitude of each of the analyzed frequency components, determining an amplitude probability per unit time as to the amplitude of each of the detected frequency components for each passage of time, storing the amplitude probability of the amplitude of each frequency component corresponding to the passage of time and displaying a graph whose dimension of coordinates are two or three out of frequency, amplitude, amplitude probability and time, and which has one other than the two or three as a parameter based on the latest memory content, a display control part includes a simple operation menu display control part 390 allowing a display to display and control a simple operation menu 410 in which a plurality of setting item keys to which minimum setting items necessary for the APD measurement are allocated, respectively, are arrayed in accordance with a setting procedure.