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Sound absorption uniformity is an important optical and functional index for interior decorative sound-absorbing paper and noise reduction partition paper. Many sound-absorbing paper products have average sound absorption coefficient reaching standards, yet existing local sound absorption deviation caused by uneven pore distribution. Partial dense areas reduce noise absorption capacity, while over-loose areas lead to insufficient structural stiffness. Unbalanced sound absorption effect causes inconsistent noise reduction performance in different regions of the same paper sheet, affecting the overall acoustic design effect of interior decoration. Most manufacturers only focus on improving overall sound absorption performance by adjusting fiber proportion, ignoring the homogenization control of internal graded pore structure. Single physical foaming or fiber blending methods easily produce pore agglomeration and layered defects, and cannot realize uniform sound energy dissipation inside paper.Shandong Ludao Energy Technology Co., Ltd. provides professional sound absorption uniformity optimization solutions. By regulating micro-pore size distribution and forming evenly distributed gradient pore channels inside paper, we realize consistent sound absorption effect in all areas. The solution balances sound absorption performance and structural stiffness, eliminates local acoustic performance differences, stabilizes indoor noise reduction effect, and improves the application value of architectural decorative functional paper.