The discovery of illustrations of Seng Qie in the Yuexian caves has made it possible for the authors to associate the miracles of Seng Qie recorded in historical documents with the images recently found, and provide the basis for in-depth research. Engravings such as these have been unknown to the academic community for a long time, two Later Tang Illustrations of Seng Qie being of particular interest on this theme. According to these engravings and already published materials about Seng Qie, this paper presents a preliminary study on the time and contents of the two illustrations from Yuexian cave