The invention discloses a high sound absorption pure cotton plate, comprising a pure cotton substrate which is provided thereon with a closed hole having a length which is 0.7-0.9 times of the thickness of the substrate, the closed hole extends into the interior of the substrate along the surface of the substrate. The invention also discloses a system for the production of the high sound absorption pure cotton plate, comprising: a pulping part, a forming part, a drying part, an embossing part and a tenoning part that are interconnected in sequence, the embossing part comprises an embossing roller, a carrying roller and a plurality of pins, the carrying roller is mounted below the embossing roller and forms a proper distance with respect to the embossing roller; the pins are distributed onthe embossing roller, the length of the pins exposed out of the surface of the embossing roller is 0.7-0.9 times of the thickness of the pure cotton substrate to be embossed. The invention leads the noise reduction coefficient of the pure cotton plate to reach over 0.6 by arranging the closed hole on the pure cotton plate and causing the length of the closed hole to be 0.7-0.9 times of the thickness of the pure cotton plate substrate.