Dunhuang manuscript Mengqiu (蒙求) has long been circulated in Dunhuang during the Tang and Five Dynasties. It is currently recognized by the academic circles as the earliest book written, and the book that best reflects the social, historical and cultural features of the Tang and Five Dynasties. At the same time, it is the closest to Li Han's original annotation of Mengqiu, so it has extremely high research value. Therefore, taking the Dunhuang manuscript of Mengqiu as the standard, and comparing the annotations of later generations of Mengqiu, we can obtain a lot of rich historical information. Based on this, this article takes the ＂quoted bibliography＂ in Dunhuang manuscript Mengqiu as the specific research object. Through the comparison with other six important Mengqiu annotations, to find the similarities and differences, and explore the causes, in order to achieve the purpose of analyzing the characteristics of the social, historical and cultural features of different eras.
