An ultrasonic diagnostic apparatus of the present invention includes: an ultrasonic probe which transmits and receives an ultrasonic wave to and from an object a phasing addition means that generates RF signal frame data of a sectional part of the object on the basis of a reflected echo signal measured by the ultrasonic probe a displacement measurement means that generates displacement frame data by measuring displacement of tissue of the sectional part on the basis of a pair of RF signal frame data items acquired at different times an elastic information calculation means that generates elastic frame data by calculating elastic information, which indicates hardness or softness of tissue of the sectional part, on the basis of the generated displacement frame data an elastic image configuration means that generates an elastic image on the basis of the elastic frame data an image display device which displays the elastic image and a memory in which the elastic image is stored.
