Sound insulation wallboard

The utility model discloses a sound insulation wallboard which comprises a wallboard body, an assembly back plate piece used for wallboard installation and sound insulation is fixedly arranged on the back face of the wallboard body, an assembly protruding block is fixedly arranged at one end of the wallboard body, an assembly groove is formed in the other end of the wallboard body, and the assembly groove is matched with the assembly protruding block. The wallboard body comprises the wood base plate and the rubber foaming material layer fixedly arranged on the surface of the wood base plate, the sound insulation wallboard structurally comprises the wallboard body and the assembly back plate, the sound insulation wallboard can be tightly attached to the wall face in a staggered butt joint mode, the problem that sound leaks at gaps after traditional wallboards are spliced can be effectively solved, and the sound insulation wallboard is convenient to use and high in sound insulation performance. And meanwhile, r