The utility model relates to a simple and easy device for measuring rock core axial and radial wave speed, its characterized in that: the pivot be located base top, the slide rail be located the base upper surface, right spout and left spout can remove in the slide rail, left probe bracket upper end support left sonic probe, the lower extreme is connected with left spout, right probe bracket be located right ultrasonic transducer upper end, the lower extreme is connected with right spout, the rock core support be located pivot top, the rock core be fixed in on the rock core support. Through the fixed direction of adjustment rock core, can realize the measurement of rock core axial with radial wave speed.