Disclosed are an ultrasonic apparatus for displaying one of an ultrasonic image, an external image and a composite image thereof by recognizing the position of eyes of a user, and a control method thereof. The ultrasonic apparatus includes a storage configured to store an external image of an object, an image processor configured to generate a composite image by registering an ultrasonic image of the object with respect to the stored external image, a recognizer configured to recognize a position of eyes of a user, and a display configured to display one of the ultrasonic image, the external image and the composite image of the ultrasonic image and the external image, based on the recognized position of the eyes of the user.
