An ultrasonic diagnostic apparatus including an ultrasonic probe for transmitting/receiving an ultrasonic wave to/from an examinee, an uniformity calculator for calculating parameters of a probability density function relating to uniformity of a biological tissue of the examinee from a probability distribution of amplitude values obtained at plural measurement points in a region of interest of an ultrasonic signal based on a reflected echo signal measured by the ultrasonic probe, an image generator for generating a tissue uniformity image gradated on the basis of the calculated parameters, and a display unit for displaying the generated tissue uniformity image.
