This paper explores the original texts and compilation of Samguksagi Kimyusin-Yeoljeon(金庾信列傳) and the timing and intention behind Kimyusin-Haengrok(金庾信行錄)’s compilation. To compose the basic structure of Kimyusin-Yeoljeon, the editors of Samguksagi reprinted or made excerpts from Kimyusin-Haengrok which was written by Kim Jangcheong. In addition, they supplemented the records about Kim Yusin and his ancestors, which were found in Sillabongi(新羅本紀), Garakgukgi(駕洛國記), Gaehwangryeok(開皇曆), Kim Yusin’s epitaph(金庾信碑), and Gogi(古記), to Kimyusin-Yeoljeon. The authors also added the biography of Kim Yusin’s sons and descendants, Wonsul(元述), Yunjung(允中), Kim Am(金巖), to Kimyusin-Yeoljeon by referring to the passed down records describing their lives. At last, they finished Kimyusin-Yeoljeon by presenting the different transcriptions of names, additional explanations, or a historical commentary praising Kim Yusin’s work. Kim Jangcheong authored Kimyusin-Haengrok during the reign of King Kyeongmun or King Heongang. In his book, he made a farfetched guess that the office position of Kim Yusin’s father and grandfather changed in Chinese style, and rewrote the geographical names with the names changed during the reign of King Kyeongdeok. In addition, in writing his book he referred to the various sources which were the records that contained revised geographical names and terms and written after the Middle Period of the Silla Dynasty, such as Hwarangsegi(花郞世記). Kim Jangcheong did not write Kimyusin-Haengrok based on the Confucian rationalist view, which means that he generally did not rewrite or exclude the contents from its original texts, even the supernatural ones. Kim Jangcheong intended to enhance the political status of Kim Yusin’s descendants who were heading for the downfall in the Late Silla Period by his completion of Kimyusin-Haengrok, which enshrined Kim Yusin’s devotion to the preservation and well-being of the nation with his supernatural ability and spirit of public service.