An ultrasound diagnostic apparatus to which a probe including a plurality of transducers arranged can be connected, causing the probe to transmit a push wave into a subject to detect propagation velocity of a shear wave, includes: a push wave pulse transmitter that uses a plurality of transmission transducers to transmit a push wave that converges to one or more transmission focus points in the subject； a detection wave pulse transmitter that supplies a detection wave pulse to some or all of the plurality of transducers to cause the plurality of transducers to transmit a detection wave； a displacement detector that detects displacement of a tissue at each of a plurality of observation points； an analysis target determiner that determines an analysis target region； and a propagation information analyzer that calculates the propagation velocity of the shear wave at each observation point.
