Provided is an ultrasound diagnosis apparatus includes a display; and a processor configured to acquire an ultrasound image of a two-dimensional (2D) cross-section including a first point representing a crux of a heart of a fetus and a second point representing a center of a spine, based on ultrasound image data of the fetus, display a first body axis including a line connecting the first point and the second point on the ultrasound image, display a first heart axis corresponding to a heart wall of the heart on the ultrasound image, and display an angle indicator indicating angle information about an angle between the first body axis and the first heart axis on the ultrasound image.