Sound barrier, which is mainly used for sound insulation and noise reduction of highway, highway, viaduct composite road and other noise sources. The sound insulation method is divided into the pure sound insulation sound barrier, and the sound absorption and sound insulation. To reduce the impact of traffic noise on the nearby residents of the railway and the side of the road side of the wall structure. Sound insulation wall, also known as sound barrier. A facility is inserted between the sound source and the receiver to enable the sound wave to propagate with a significant additional attenuation, thereby reducing the noise in a certain area where the receiver is located. Is divided into traffic noise barrier, equipment noise attenuation noise barrier, industrial factory noise barrier, highway and highway is the use of various types of sound barrier.