An ultrasound diagnostic apparatus according to an embodiment includes an abdominal image generator, an ultrasonic image generation unit, a specifier, and a display controller. The abdominal image generator generates an abdominal image graphically representing the abdomen of a mother. The ultrasonic image generation unit generates an ultrasonic image based on a reflected wave signal received by an ultrasonic probe put on the abdomen of the mother. The specifier specifies the position of the ultrasonic probe on the abdominal image. The display controller causes superimposed display of the ultrasonic image on the position on the abdominal image thus specified in accordance with the echo direction of the ultrasonic probe.