Composite multi-cell sound absorption structure

The utility model discloses a composite multi-cell sound absorption structure which comprises a micro-perforated plate, a porous sound absorption material, a rigid partition plate and a bottom square table. Wherein the porous sound absorption material is a porous sound absorption material plate; the micro-perforated plates and the porous sound absorption materials are alternately arranged in a checkerboard shape, bottom square tables are correspondingly arranged right opposite to the micro-perforated plates and the porous sound absorption materials respectively, the micro-perforated plates, the porous sound absorption materials and the bottom square tables are connected into a whole through rigid partition plates, and closed air layer inner cavities are formed among the micro-perforated plates, the corresponding bottom square tables and the micro-perforated plates. And each porous sound absorption material, the corresponding bottom square table and a closed air layer inner cavity formed between the porous sou