The present invention provides an ultrasonic wave-dissipation block and an ultrasonic probe having the same, which reflect and diffract a backward ultrasonic wave progressing toward the rear of piezoelectric ceramics for generating ultrasonic waves, so as to dissipate the ultrasonic wave, thereby improving the absorption performance of the ultrasonic wave, while reducing the weight and size of a part performing the role of absorbing the ultrasonic wave. The ultrasonic wave-dissipation block comprises: a base body in which an accommodation space is formed； and an ultrasonic reflector disposed in the accommodation space of the base body, and reflecting the ultrasonic wave, flowing in from the outside of the base body, in the direction of the inner sides of side walls of the base body.
