Sound barrier device

The sound barrier device comprises a base and a set of mounting plates, the mounting plates extend on the base in the longitudinal direction, the mounting plates are oppositely arranged to form a mounting cavity, the base is provided with a mounting groove penetrating in the longitudinal direction, and the mounting groove communicates with the mounting cavity; a positioning groove upwards extending to the top of the inner wall of the mounting plate is formed in the side wall of the mounting groove; the positioning parts are located in the positioning grooves, the two ends of each positioning part are detachably and fixedly connected with the corresponding sound barrier body in the longitudinal direction of the base, and the sound barrier bodies are located in the mounting grooves. According to the device, the sound barrier bodies are arranged at the two longitudinal ends of the positioning part correspondingly and located in the mounting grooves, the positioning part is matched with the positioning groove to