宋代陳摶（？ -989）一系所開展之圖書易學，標誌為突破傳統界囿的哲 學思維與認識方式之創造性理解，含弘深厚的象數與義理內蘊，擴大易學詮釋 之視野；劉牧（1011-1064）、邵雍（1011-1077）等圖說影響深遠，成為南宋 以降易學發展的重要特色之一。朱元昇（？ - ？）為南宋中後期之重要易學家， 著《三易備遺》，制作一百一十六幅圖式，圖說思想多與劉牧、邵雍相繫，系 統性的建構《連山易》、《歸藏易》與《周易》合先天、中天與後天之思想。 本文以朱元昇《三易備遺》為研究對象，其三《易》之說，重塑自《周禮》所 記的歷傳之不同易學系統之宇宙圖式，龐博豐富的思想內涵，妙司神契，洞徹 易學蘊奧，多有可探賾索隱之處。因此，本文主要梳理其三《易》有關圖式與 思想主張，展現的具體內容，以及傳達之重要意義。

Since Chen Tuan formed his theories, Tu-shu yixue in the Song Dynasty, different from traditional philosophical thinking, has been approached and interpreted in innovative ways, known for its richness in contents both in the fields of Xiangshu and Yili, and for its wider scope of interpretations. Liu Mu’s and Shao Yong’s theories of Tu-shu yixue had had great influence and become one of the important features in the development of Yi studies since Southern Song Dynasty. Zhu Yuansheng was a predominant figure in the field of Yi in the mid-late Southern Song. He composed 116 Yi-diagrams in his San Yi Bei Yi, with thoughts closely related to Liu Mu’s and Shao Yong’s views. Zhu systematically incorporated Lian shan yi, Gui cang yi and Zhou yi with Xiantian, Zhongtian, and Houtian. The rich and complex contents of Zhu’s San Yi Bei Yi provide profound insights into the understanding of Yi. This article aims to explore the thoughts, diagrams, and contents in three Yi-related books, and the important meanings the books convey.