The invention relates to a sound absorption and noise reduction device, and particularly relates to the sound absorption and noise reduction device. The sound absorption and noise reduction device comprises fixed frame plates, anti-collision sound-absorption assemblies and sound attenuation blocks, wherein each fixed frame plate comprises a rear sound absorbing plate, a left fixed plate, a right fixed plate and a plurality of sound wave reflection columns; the left end and the right end of each rear sound absorbing plate are respectively connected with the corresponding left fixed plate and the corresponding right fixed plate; the plurality of sound wave reflection columns are uniformly arranged on the front end surface of the corresponding rear sound absorbing plate; each sound wave reflection column comprises a support column and a polygonal pyramid; each polygonal pyramid is fixedly connected to one end of each support column and the other end of each support column is fixedly connected to each rear sound absorbing plate; the plurality of anti-collision sound-absorption assemblies are arranged between one corresponding left fixed plate and one corresponding right fixed plate; the quantity of the anti-collision sound-absorption assemblies is identical to that of the sound wave reflection columns. The sound absorption and noise reduction device has the beneficial effects thatan optimal sound absorption and noise reduction effect is achieved, and a buffer effect on the sound absorption and noise reduction device can be achieved when the sound absorption and noise reductiondevice is hit.