Noise reduction barrier for municipal road and bridge construction

The noise reduction barrier for municipal road and bridge construction is characterized in that the noise reduction barrier comprises a base, a supporting frame and a sound absorption plate, supporting ribs are fixed to the upper side of the base, and the supporting frame is mainly composed of a first clamping plate, a second clamping plate, an inner transverse moving plate and an inner fixing plate; the lower end of the second clamping plate rotates in the upper end of the base through a rotating shaft, fixing assemblies are installed at the upper end of the supporting rib and in the second clamping plate, and the second clamping plate is fixed to the upper end of the supporting rib through the fixing assemblies when rotating to the vertical state. The purpose of reducing noise in a municipal road and bridge construction site conventionally can be achieved, meanwhile, the situation that the acoustic board is placed on the ground and then carried to a supporting frame by a worker is not needed, the labor inte