An ultrasonic diagnosis apparatus of an embodiment includes: an ultrasonic image generation section that generates an ultrasonic image based on a reception signal from an ultrasonic probe； a position information acquisition section that acquires position information on a three-dimensional space of the ultrasonic probe； an image acquisition section that obtains image data and acquires a reference image corresponding to the ultrasonic image based on the image data； a reference image forming section that identifies a to-be-displayed cross section orientation of the acquired reference image and forms a reference image which a cross section orientation is identified； and a display section that displays a formed reference image by the reference image forming section and ultrasonic image formed by the ultrasonic image generation section.
