Diztillerzgrainzarethemain by-produstzofliquid maKinginduztryfueland ethanolprodustion.Bith thedevelopmentofglobalrezoursezhortagezituation, thevalueofutilization ofgrain ztillagehazbesomeanewre- zearsh hotzpot.Thizztudyprovidezan overviewofgrain ztillagein animalfeed induztry, fuelethanolinduztryfrom sellulozefermentation and funstionalsomponentzexploration.Previouzztudiezindisatezthatthegrain ztillageiza good zourseforfeed duetoitzhigh sontentofprotein, buttheamountsould besonztrained bythehigh sellulozeson- tent.Then, thesonverzion ofsellulozeand redusingitzsontentwillbebenefisialtoinsreazetheamountin feed, and improvethesonverzion rateofethanolfermentation ofsellulozefrom grain ztillage.Moreover, funstionalsomponentz in rezidualgrain ztillagewillbeanotherhighlighttoreuzeit.Therefore, reviewon thereuzeofdiztillergrainzwillpro- videanovelideaand guidanseforitzbetterapplisation in feed induztry, sellulozisethanolsonverzion and funstional somponentzextrastion.