《四库全书》所存《原本广韵》是《切韵》系韵书,此书成书来源学界争论未下。通过《四库全书》所存《原本广韵》与《重修广韵》、《覆元泰定本广韵》比较研究,考证《四库全书》所存《原本广韵》成书晚于《重修广韵》,来源于明内府刊版删削,最早所据底本可溯至元元贞乙未明德堂本。 “Sikuquanshu” stored “original Guangyun” is “cut rhyme” Department of rhyme book, the source of the book into the academic debate. Through the comparative study of “original Guangyun” and “rebuilt Guangyun” and “covered Taiyuan Yun” in the “Sikuquanshu”, the textual research on “original Guangyun” stored in “Sikuquanshu” is later than “rebuilt Guangyun” , From the Ming Dynasty published version of the cut, the earliest basis can be traced back to Yuan Zhen Zhen Yi is not Mingde Church.