An ultrasound diagnostic apparatus includes a transmitting and receiving unit, an extracting unit, a generating unit, a brightness information controlling unit and a display unit. The transmitting and receiving unit transmits an ultrasonic wave to and receives an ultrasonic wave from a diagnosis part including a moving body in an object. The extracting unit extracts a Doppler signal based on a reception signal obtained by the transmitting and receiving unit. The generating unit executes a frequency analysis on the basis of the Doppler signal and generates a Doppler spectrum. The brightness information controlling unit controls brightness information on the Doppler spectrum on the basis of a brightness correction value appropriate for a frequency subjected to the frequency analysis. The display unit displays, on a display device, the Doppler spectrum on which the brightness information is controlled by the brightness information controlling unit.
