《易》是經典之擘，《三國演義》則是「小說」閱讀之首選，〈毛批〉取《易》學以評注《三國演義》，即在強調聖人之學是「日用而不知」，庶民在無形的薰陶下，建構出優雅的文化意識。歸納〈毛批〉二十五則與《易》學有關之內容來看，就「義理」方面，可得其淵源來自《周易正義》，而運用概念則為「史事《易》學」精神；至於「象數」方面，亦多採用漢、魏條例。〈毛批〉引《易》學並融合其他學術，積極提升「小說」於學術上之層次，此為其評注特色；但是〈毛批〉為了融合論點、博引相關資料，以至於詮釋過當，甚至混淆《易》學範疇之嫌，是其瑕疵之處。

”The Book of Changes” is breaking by twisting in hands of the classics. ”The Romance of the Three Kingdoms” is the first novel to be chosen. ”Mao's comments” choose ”The Book of Changes” to comment the note ”The Romance of the Three Kingdoms”. It wanted to emphasize that sage's knowledge is omnipresent but we didn't knew. The commoners is populace under invisible education. It builds the graceful cultural consciousness. To induces to 25 rules content about ”The Book of Changes” of the ”Mao's comments”. And about the principles that were originated from 《周易正義》. And by using the concep from ”Proves Book of Changes's value by the historical event” spirit. And about the 「象數」 also using the regulation of the Han Dynasty and Wei Dynasty. The ”Mao's comments” from ”The Book of Canges” and also blend with the other sciences. Promotes the novel level is his characteristic positively for his unique features. But to blend in with the argument .In fact that is to flaunt on suspicion of intelligence and scholarship. So that to interpret is improper. Therefore confuses ”the Book of Changes” scope.This research after relating in detail his viewpoint. Must make some deductions with to clarift right and wrong. For this reason uses for ”Mao's comments” about ”the Book of Changes” the good and bad points.