The invention discloses a composite sound insulation board, which comprises two layers of insulation boards and two layers of sound insulation boards between the insulation boards, the insulation boards and the sound insulation boards are bonded together with sound insulation adhesive, and two layers of wood damp-proof boards are respectively stuck on the outsides of the insulation boards with glue; the insulation boards are any one or two of a polyethylene foam board, a polyurethane foam board and a polystyrene foam board, and the sound insulation boards are rock wool boards; after being mixed uniformly, cement, expanded perlite, vegetable fibers and sound insulation agent are heated to 60 DEG C to 65 DEG C and then agitated, so that the sound insulation adhesive is produced. The composite sound insulation board has good sound insulation and insulation effects, the production process is simple, the composite sound insulation board is fireproof, not only is the insulation effect good, but also the composite sound insulation board has a sound insulation effect, and the sound insulation layer has a dual sound insulation function.