[Problem] To provide an ultrasonic apparatus with which a decision can be made with better precision as to whether or not to apply gain reduction processing to a gain for echo signals.[Means for Solution] An ultrasonic diagnostic apparatus comprises a control circuit executing: a creating function of creating, based on echo signals from first ultrasound transmitted to a subject to be examined, data for a B-mode image having brightness depending upon intensity of the echo signals； a motion detecting function of detecting a velocity value, etc. as information on motion in the subject based on echo signals from second ultrasound transmitted to said subject； and a deciding function of, in a case that the intensity of the echo signals from said first ultrasound is smaller than a first threshold th1 and said velocity value is equal to or greater than a second threshold th2, deciding that a gain for the echo signals from said first ultrasound is a target of gain reduction processing.
