A technique for realizing an ultrasonographic device that can obtain respective rendering images for a plurality of regions of a 3D space is disclosed. According to the technique, in such a way that a transmission beam former 2 generates an ultrasonic beam for scanning a plurality of regions of interest, a matrix array 1 is driven, and when a reception beam former 3 generates a plurality of beam forming signals corresponding to the regions of interest, respectively, in accordance with the reception signal of the matrix array by the reflection wave from the respective regions of interest, a signal processing unit 4 processes the beam forming signals, and with a viewpoint set for each of the regions of interest as a standard, generates respective rendering images of the plurality of regions of interest, and a display unit 5 displays the plurality of rendering images in parallel. At this time, a control unit 20 carries out the setting of the plurality of regions of interest and the setting of the viewpoints of the rendering images, by the external operation.