An ultrasonic diagnostic device includes: a probe including a plurality of elements that are arranged； a transmission unit that transmits an ultrasonic beam by performing transmission focusing in a first direction from the plurality of elements of the probe； a reception unit that generates element data by processing reception signals output from the plurality of elements of the probe that has received an ultrasonic echo generated by the ultrasonic beam transmitted from the transmission unit； an element data processing unit that generates reflection component removal data by removing a reflection component generated from the first direction from the element data； an image generation unit that generates an ultrasonic image by performing reception focusing for the element data； and a control unit that controls the image generation unit to generate an image signal along a second direction different from the first direction by performing reception focusing in the second direction for the reflection component removal data generated by the element data processing unit.
