Abstract: The utilization of distiller is confined greatly in the formula feed because of its high rough fibre. This paper expounded a new technology, which can effectively reduce the content of rough fibre. According to this technology, the dehydrated distiller firstly was vibrated and striked with hammer mill without screen and then sifted by vibrating screen. The action mechanism of vibrationseparation was probed and compared with the rubbing. Some of the related experiments results were also introduced.