An ultrasonic diagnostic device capable of preventing useless transmission of an ultrasonic pulse for detection from being performed characterized by including a processor that executes a program for controlling an ultrasonic probe such that transmission of an ultrasonic push pulse to a biological tissue of a test object and transmission of a plurality of ultrasonic pulses for detection on the same sound ray in order to detect a shear wave generated in the aforementioned biological tissue with the push pulse concerned are alternatively repeated, the program for controlling the aforementioned ultrasonic probe such that the aforementioned ultrasonic pulses for detection are transmitted on the aforementioned sound ray until the aforementioned shear wave is detected at a predetermined number of detection points on the sound ray that the aforementioned ultrasonic pulses for detection are transmitted.