《總目》對歷代學術的評述邏輯，實亦蘊含其時主流學術觀念。因此，分析《總目》對易類著作的評述邏輯，當有助於瞭解清代主流易學觀念。《總目》將易學分為「兩派六宗」，即象數派所轄之樸素象數宗、禨祥宗、造化宗，與義理派所統之老莊宗、儒理宗、史事宗。對兩派六宗雖主張兼收並採，亦認為象、數、理諸端相生相成，但《總目》卻隱含主象、重理以「立教」的邏輯傾向。從而將以象為主的樸素象數學，和切近人事的儒理宗、史事宗劃為「易中」；而主數的禨祥宗、造化宗，和主理而不近人事的老莊宗與心學易則被斥為「易外」。在《總目》看來，前者將《易》引入術數，後者將之推向異學。《總目》如此剖析條流，實即清儒秉持儒家易學觀對歷代易學著作與流派，在目錄學層面進行全面而徹底的清算。

Implicit in the commentarial logic of the Siku quanshu zongmu’s (四庫 全書總目General Catalog of the Complete Library of the Four Treasuries) critique of historical scholarship, are the mainstream scholarly ideas of the time. An analysis of this logic with respect to works on the Yijing (易經 Book of Changes) will therefore help us understand the mainstream concepts found in Qing dynasty Yijing studies. The Siku quanshu zongmu categorizes Yijing studies into“two sects and six schools,” namely the Image-Numerology Sect 象數派, which includes the simple Image-Numerology School 象數宗, the Divination School 禨祥宗, and the Object-Creating School 造化宗; and the Meaning-Pattern Sect 義理派, consisting of the Lao-Zhuang School 老莊 宗, the Neo-Confucian School 儒理宗, and the Historical Event School 史 事宗. Despite giving consideration to all of the two sects and six schools, and arguing that xiang (象 image), shu (數 number), and li (理 meaning, pattern) are mutually complementary concepts, the Siku quanshu zongmu however displays a logical tendency towards orthodoxythat implies an emphasis on xiang and li. Consequently, it classifies the simple Image-Numerology School, which attaches most importance to xiang, and the Neo-Confucian and Historical Event schools, which are closer to the world of human affairs, as the orthodox in Yijing studies. Conversely, the Divination and Object-Creating schools that emphasize shu, and the Lao-Zhuang and Mind-Philosophy 心學 schools, which emphasize li and are less concerned with human affairs, are excluded from the orthodox. This is because the Siku quanshu zongmu views the former as drawing the Yijing into divination, and the latter as pushing it towards heterodoxy. The above reflects how Qing dynasty Confucians adhered to Confucian views on Yijing studies when undertaking the full and thorough bibliographic critique of its historical schools and works included in the Siku quanshu zongmu.