An examination of two fragmental Buddhist manuscripts in Chinese complete with the donator’s inscription kept in Lüshun Museum are respectively a fragment of the Karunikaraja-prajnaparamita-sutra translated by Kumarajiva during the Eastern Jin dynasty and a fragment of Suvarnaprabhasa translated by Dharmaksema in the Northern Liang dynasty. Both are famous country-protecting sutras in Buddhism. By identifying the inscriptions and combining them with historical literature and other unearthed cultural relics, it has been confirmed that the donor of the two Buddhist manuscripts is Qu Qiangu, the 7th king of Gaochang(Qo o) ruled by the Qu Family. The discovery of these two fragments has provided valuable new materials for studying the history and culture of Xinjiang.