On the basis of Aurel Stein’s diaries,accounts,and correspondence preserved in Britain,France,and Hungary,this article explicates the whole compilation process of Jiang Xiaowan’s Catalogue containing 1,318 Chinese manuscripts from Dunhuang acquired by Aurel Stein during his second Central Asian expedition.The author stresses the point that as it is the first catalogue of Chinese manuscripts to be found in the British Collection,Jiang Xiaowan’s Catalogue may be of considerable importance from the viewpoint of academic history.The author further appeals for an early search for the lost catalogue.