“Tu-jing” was the former generation of local records. It developed enough during Sui and Tang period. First of all, this author documents the lost before 960 A.D. and he finds many lost sentences. There are 88 “Tu-jing” and 360 lost sentences which had their own names in light of this research. There are 186 lost sentences without names as well. The author divides these lost sentences into four parts, i.e. first Jia is that Sui and before Sui, second Yi is for Tang and Five Dynasties, third Bing is for no era, and the forth Ding is lost sentences without names. The author discusses three questions. One is about remnant situation of these lost sentences and its academic value. Second is commentary about academic productions in existence. Third is to reason the time of a certain “Tu-jing”. In his opinion, “Tu-jing” had a well-knit base for local records in Chinese history. But there were many blemishes of modern academic productions. Thus he had put forward his contribution about the time of a certain “Tu-jing” through the change and maintenance of ancient administrative division. This is the first system research out and out about “Tu-jing” before Five Dynasties.