Sound-absorbing decorative panel is made by environmentally-friendly recycled plastic, polyester felt. This novel interior decoration material provides spatial acoustic fine adjustment, which is the most elegant acoustic control method. When space is filled with uncomfortable noisy sounds, the control of the sound becomes a topic issue that designers are keen to solve. Polyester felts can hang or fixed in the ceiling to make sound be absorbed, especially for high-frequency sharp sounds. Felt makes the sound mild and clear. Due to these characteristics of polyester fiber, it becomes a high-quality, perfect and meets high demanding interior decoration application material. Let the interior decoration be promoted to a new realm of space aesthetics, both in visually and audibly.