The Annotation of Pei songzhi is in a form of historical annotation, but he provided more than footnotes for the SANGUOZHI. A annotating SANGUOZHI, Pei helped the readers process the materials without saying a word to convey his particular idea, thereby committing it to memory more effectively. By creating and rendering annotation on the historical books, we can get a more clearly impression of the history itself. So making an insight into Pei's historical annotation will be very meaningful.