An ultrasound diagnostic apparatus 1 includes a control section 13 that performs control such that an ROI is displayed on a screen 21 upon input of a predetermined command. The ROI is for displaying a flow mode image of a region including a start point and an end point of a puncture path of a puncture needle 2c that appears on a screen of an ultrasound image when the puncture needle 2c is protruded from an ultrasound probe 2a.
