An ultrasound diagnostic apparatus which includes: an imaging unit which forms images of a subject; a motion detection region setting unit which selects a first image from among the images which include images of the ultrasound contrast agent, selects a second image from among the images which do not include images of the ultrasound contrast agent, and sets, as a motion detection region, a region in which an amount of image change between the first image and the second image is smaller than a predetermined amount; and an output unit which outputs, as the ultrasound diagnostic image, the second image on which a position adjustment has been performed to match a position of the motion detection region set by the motion detection region setting unit and a position of a region included in the second image and similar in an image feature to the motion detection region.