An ultrasonic diagnostic apparatus is configured as follows. Namely, an ultrasonic diagnostic apparatus is provided with a control unit which collets a heart synchronized signal and etc. synchronizing with workings of a heart of a patient and etc., and an image processing unit which detects an overlapped area of the three-dimensional data acquired by ultrasonic scanning from different echo windows, for the three dimensional image data group acquired in the same time phase in synchronization with the heart synchronized signal or aspiration synchronized signal, combines the three-dimensional image data and generates a panorama three-dimensional image data group consisting of panorama three-dimensional image data which are continued in time and have a display area larger than each of the three-dimensional image data.
