敦煌存《靈州龍興寺白草院史和尚因緣記》是有關唐後期西北社會與佛教信仰的一篇重要文獻。本文以此爲中心,重新梳理有關記載,從材料可靠性、所涉人物年齡履歷等方面詳加考察,論證了敦煌文獻有關唐大中七年朔方節度使的記載是正確可信的,唐大中七年的朔方節度使爲李公度,而非學界所公認的李彦佐。 Dunhuang deposit “Lingzhou Longxing Temple Baicao history monk” in the late Tang Dynasty is an important document of Northwestern society and Buddhist faith. This article as a center, to sort out the relevant records, from the reliability of materials, the history of the characters involved in a detailed inspection, demonstrated Dunhuang literature about Tang Dynasty seven years Shuofang Jiedushi records is correct and credible, Tang Dazhong seven years Shuofang Jieshi make Li Gong degree, rather than recognized by the academic Li Yanzuo.