The object of this dissertation is to set up “Korean General Tales” as a genre and, clarifying the various transmitted appearances and the meanings and principles of “Korean General Tales”, to examine the status and significance of “Korean General Tales” in the history of Korean narrative literature. “Korean General Tale” is ‘a narrative story of the real general who played an active part historically.’ This definition can make it differences from Commander(장수) Tales and Heroic Novel, and establish it as an original type that it is a story of the real general. The narrative structure of “Korean General Tales” has some connection with the birthmyth of a nation, especially Ju-Mong(주몽) myth, and seems also to be related with Dan-Gun(단군) myth. However, whereas Ju-Mong myth is intended to describe that Ju-Mong has the ability and inevitable duty to build up Kogurya(고구려), Kim You-Shin\'s tale reflects just that he is the personage to achieve the great work of unification of three nations. These different purposes had an influence only upon forming both of heroes\' stories narratively, and the community that they were the best heroes of their ages basically caused both of stories to have the same narrative structures. In the study of the varied transmitting of “Korean General Tales”, it was examined that generally “Korean General Tales” had been changed and developed from the narrative structure with mythical order emphasizing the extraordinary mystery, to gradually the narrative structure with reasonable order.