An ultrasound diagnostic apparatus has: a recommended posture angle generation unit that sets, as a recommended posture angle, a posture angle of an ultrasound probe in a case where the likelihood of an imaging part in an ultrasound image with respect to an examination part is maximized while the posture angle of the ultrasound probe is being changed over a predetermined angle range including a basic posture angle of the ultrasound probe, which is set corresponding to the examination part, by bringing the ultrasound probe into contact with the body surface of a subject and tilting the ultrasound probe by an operator； and a recommended posture angle notification unit that notifies the operator of the recommended posture angle generated by the recommended posture angle generation unit.
