From 1910`s many historical novels pursuing amusement rather than lesson have been published. A kind of those historical novels was made by ``invisible mending``. Concrete method of invisible mending is as follows. First, combining historical fact with hero/heroin`s tales. Second, combining historical fact with hero/heroin`s tales, and general tales which is modified for hero/heroin`s story by the writer. Third, combining historical fact with hero/heroin`s tales, general tales, and other novel`s story which is also modified for hero/heroin`s story by the writer. Invisible mending was that handed down from old novels of the Josen(朝鮮) dynasty. Invisible mending historical novels used that method very positively, so most part of the outline have been composed by the existing stories. And those novels combined heterogeneous stories daringly in a work. The invisible mending method have become a style of the historical novels in the early 20`th century. Printed novels as a commercial goods have pursuit amusement positively. It was the reason why the invisible mending historical novels borrowed other interest stories. The publishers have made new works continuously to make profits, and the writers following that have made manuscripts in a short term. In this circumstances the invisible mending method became the way that writers could make the story easily in a short time.