An ultrasonic diagnostic apparatus to which a probe including a plurality of oscillators is connectable and that causes the probe to transmit a push wave including an ultrasonic beam to focus into an object to be examined, to detect a propagation speed of a shear wave, includes: a push-wave pulse transmitter that supplies a push-wave pulse to each of a plurality of transmission oscillators, to cause the plurality of transmission oscillators to sequentially transmit a plurality of push waves to focus onto a plurality of transmission focuses, a detection-wave pulse transmitter that supplies a detection-wave pulse to part or all of the plurality of oscillators, to cause the plurality of oscillators to transmit a detection wave to pass through a region of interest； and a propagation information analyzer that calculates propagation-speed frame data of a shear wave in the region of interest.
