Abstract: The optical glass,the sound velocity of which is close to those of metal materials,has been used to study the ultrasonic wave propagation in round metal rod,such as in steel,iron and aluminum,to verify the current acoustic theories.The propagation behaviors of the longitudinal,transverse and Ray-leigh waves of ultrasonic pulse in round glass rod are analyzed by the dynamic photoelasticity technique in the case where the angled of incidence on the side of the rod is 900.The propagation images of all ultrasonic waves in the cross-section of round glass rod are recorded from 0 to 99.9 μs at 0.1μs interval.The propagation behaviors of ultrasonic wave in opacity materials can be stimulated by the experimental means.