The highway sound barrier is mainly composed of steel structure column and sound absorption and insulation panel. The column is the main load-bearing component of the sound barrier, which is fixed on the road anti-collision wall or the embedded steel plate beside the track by bolts or welding; The sound-absorbing and sound-absorbing board is the main sound-absorbing component, which is fixed in the H-shaped column slot through the high-strength spring clip to form a sound barrier.