Sound insulation and noise reduction device for civil construction

The utility model relates to the technical field of civil construction, in particular to a sound insulation and noise reduction device for civil construction, which comprises a sound insulation plate body, splicing grooves are arranged on two sides of the sound insulation plate body, splicing devices are arranged on the surfaces of the splicing grooves, each splicing device comprises a limit rod, a transmission rod and a clamping block, the clamping blocks are fixed on the transmission rods, the transmission rods are fixed on the limit rods, and the limiting rods are fixed on the transmission rods. A clamping groove is formed in the splicing groove on the other side; the connecting plate is arranged on the surface of the limiting rod, a limiting block is arranged on the surface of the connecting plate, three sets of clamping grooves are formed, and one end of the limiting block is located in the other two sets of clamping grooves; the sound insulation board has the beneficial effects that the sound insulation