Sound-absorbing decorative wall

The utility model discloses a sound-absorbing decorative wall which comprises a frame and a mounting plate, the interior of the frame is fixedly connected with a sound-insulating wall body, the front side wall and the rear side wall of the frame are both fixedly connected with sound-insulating plates, the interior of the sound-insulating wall body is evenly provided with cavities, the interior of a rectangular sliding groove is slidably connected with a rectangular sliding plate, and the interior of the rectangular sliding groove is provided with a sound-insulating plate. Positioning grooves used in cooperation with the positioning through holes are formed in the front inner surface and the rear inner surface of the rectangular sliding groove correspondingly, a magnetic positioning rod is slidably connected into the positioning groove in the front side, and a magnet is arranged in the positioning groove in the rear side; the mounting plates are clamped in the rectangular sliding grooves through cooperative us