An ultrasonic diagnostic device according to an embodiment includes generation circuitry, detection circuitry, and display control circuitry. The generation circuitry generates an ultrasonic image based on reflected waves received by an ultrasonic probe. The detection circuitry detects an orientation of a puncture needle inserted into a subject. The display control circuitry displays the generated ultrasonic image while changing its orientation, corresponding to the detected orientation of the puncture needle.
