Bimo Books are written works by Bimo following an "incomplete" tradition. They have poetic characteristics， and their references are realized by the signifier of Bi Rite， a kind of talking-singing art. Therefore， only when Bimo Books， Bimo and Bi Rite coexisted， could they form a unified imitative or narrative field of talking and singing. Different combinations of Bimo， Bimo Books and Bi Rite take up spaces and determine operational logics by virtue of their respective structural forces. Based on the Catharsis method， the narrative function analysis of Aristotle''s Poetics， this paper tries to interpret the coexistence of Bimo Books， Bimo and Bi Rite， which focuses on Purification， Edification and Persuasion in areas of ethical， psychological and religious views， namely the operational logic of Catharsis.