An ultrasound diagnosis apparatus providing a map of an interest index. The ultrasound diagnosis apparatus includes: a calculating unit for calculating a mechanical index (MI) corresponding to a depth value in a direction in which ultrasound travels from an ultrasound output part of a transmission transducer; a visualization unit for generating an MI map in which a relationship between the calculated MI and the depth value is visualized in the form of a graph; and a display unit for displaying the MI map.