Indoor decoration sound insulation wall

The utility model relates to the technical field of indoor decoration, and discloses an indoor decoration sound insulation wall which comprises a sound insulation wallboard and a keel, the keel is installed on the surface of a ceiling, the periphery of the sound insulation wallboard is connected with the keel by arranging a fixing mechanism, and a plurality of sets of hanging mechanisms are further arranged between the sound insulation wallboard and the keel. The hanging mechanism comprises clamping plates symmetrically installed on the surface of the sound insulation wallboard in a sliding mode, the clamping plates are of an L-shaped structure, clamping grooves matched with the clamping plates are formed in the surface of the keel, and a synchronous moving mechanism is arranged between the two clamping plates. When the soundproof wallboard is installed, the clamping plates on the soundproof wallboard can be embedded into the clamping grooves through the synchronous moving mechanism, the soundproof wallboard