An ultrasound diagnostic apparatus 1 includes an ultrasound probe 15, an image acquisition unit 8 that transmits an ultrasound beam from the ultrasound probe 15 to a subject to acquire an ultrasound image, a site recognition unit 9 that performs image analysis on the ultrasound image acquired by the image acquisition unit 8 to recognize an imaged site of the subject, a memory 11 that stores at least one peripheral site effective to detect a target site, and an operation guide unit 10 that, during detection of the target site, guides a user to operate the ultrasound probe 15 so as to detect the at least one peripheral site stored in the memory 11 and guides the user to operate the ultrasound probe 15 so as to detect the target site on the basis of a recognition result obtained by the site recognition unit 9.