Abstract: Li Tiaoyuan's compilation and engraving activities of ancient books run through his whole life, including searching for rare books, compiling books, compiling large-scale series and subsequent revision and supplement, which has made important contributions to the preservation of Bashu cultural documents. In terms of content, Li Tiaoyuan has compiled four complete sets of classics and history, and published several large-scale series, such as Hanhai, Xuhanhai, Shuya and Quan Wu Dai Shi. He collected a wide range of materials about the literature of Bashu in past dynasties, especially the works of Yang Shen in Ming Dynasty, and engraved them into Hanhai. It is Hanhai that makes these works survived. He paid great attention to the reliability and integrity of the documents, and so the ancient books compiled and engraved by him are all in good quality, which are regarded as the representative Bashu books in the mid-Qing Dynasty. The dozens of prefaces and postscripts of Han Hai written by Li Tiaoyuan reflect Li's Philology thoughts, covering revising the author, analyzing the versions, correcting the mistakes of predecessors, and supplementing the contents.