初唐“四杰”之一的杨炯,曾享誉诗坛,并与其他“三杰”一起为后人称颂。传世杨炯作品本已不多,古写本更属罕见。近年,我们在敦煌文献中发现了杨炯的《浑天赋》残卷(图一)。原卷编号S.5777,藏英国图书馆。《敦煌遗书总目索引》曾拟题为《天象讚》。1992年夏,宋家钰先生等在编辑《英藏敦煌文献》时,对此卷的定名提出疑问。因我曾在敦煌天文历法文献方面用过一些力气,几位先生希望我能提供意见。遵先生们之清命, Yang Jiong, one of the early Tang dynasties of the “Four Dynasties,” once enjoyed a reputation of poetry and praised the posterity with other “Sanjie”. Yang Jiong handed down the works of this is limited, the ancient writing is even rare. In recent years, we found Yang Jiong’s muddy gift in Dunhuang literature (Figure 1). Original volume number S.5777, possession of the British Library. “Dunhuang supremacy index” had been proposed as “astronomical praise.” In the summer of 1992, Mr. Song Jiayu and others questioned the naming of the volume while editing The Dunhuang Documents in British Tibet. Because I have used some strength in the Dunhuang astronomical calendar, several gentlemen hope I can give advice. Follow the gentleman’s life,