Sound barrier fixing structure

The utility model relates to the technical field of sound barriers, and discloses a sound barrier fixing structure which comprises a barrier frame, a supporting plate is fixedly installed in the middle of the inner wall of the barrier frame, a rubber pad is fixedly installed on the front face of the supporting plate, clamping grooves are formed in the two sides of the inner wall of the barrier frame, and installation grooves are formed in the two sides of the front face of the barrier frame. And support springs are fixedly mounted on the inner walls of the mounting grooves, clamping blocks are fixedly connected to one ends of the support springs, and a silencing plate is arranged in the barrier frame. The silencer has the following advantages and effects that when the silencing plate needs to be replaced, the reinforcing frame is opened through cooperation of the hinges, the clamping blocks are pushed towards the two sides, the support springs are compressed, the fixing blocks on the two sides of the silencin