Totally-enclosed ventilation pressure-relief sound-insulation sound-absorption barrier plate

The utility model discloses a totally-enclosed ventilation pressure-relief sound-insulation sound-absorption barrier plate, which forms a totally-enclosed tunnel on two sides of a lane, and comprises a sound-absorption surface layer, an inner sound-absorption material layer, a pressure-relief channel, an outer sound-absorption material layer and a sound-insulation layer outer plate which are sequentially arranged from the inner side to the outer side, the sound absorption surface layer extends from the inner side to the outer side so as to wrap the top and the bottom of the barrier plate. The sound absorption surface layer, the inner sound absorption material layer and the outer sound absorption material layer are used for absorbing sound, the sound insulation layer outer plate is used for insulating sound, and a cavity between the inner sound absorption material layer and the outer sound absorption material layer serves as a pressure relief channel; ventilation areas are arranged on one side of the upper end