《大易象數鈎深圖》為宋代易學圖說之匯輯大作，其龐博多元的思想內涵，多有其妙司神契、造微詣遠之處。其中輯鄭東卿六十一幅圖說為最大宗。透過有關之圖說，探賾索隱，洞徹鄭東卿易學之蘊意；深刻體察其因象求義的象數立說之特色，並帶有濃厚的漢《易》氛圍與創新的象數主張。本文分別從數值與卦象之用、爻位者象的效爻之用、天文律呂的時空律則，以及干支五行的卦位布列等幾個方面，從有限的文獻中，進行詳要之探述與評論，提供對其易學內涵理解之參照。

Da Yi Xiang Shu Gou Shen Tu is the richest collection of Tu-shu Yi Xue in Song Dynasty, and its complex and diverse content has far-reaching influence. Zheng Dong-Qing’s 61 Yi-diagrams account for the majority of the collection. Relevant diagrams in the book reflect Zheng’s distinctive feature of obtaining Yi through Xiang, his innovative Xiang-Shu ideas, and the fact that his theory is highly influenced by Han-Yi. With limited literature available, by exploring the application of numbers and Gua, the use of Yao and Xiang, the time-space law of astronomy and lǜ-lǚ, and the Gua alignment of Tian-gan, Di-zhi, and the five elements of the universe, the present study aims to delve into the content of Zheng’s Xiang-Shu theory and provide a detailed analysis and evaluation of his Yi Xue, with the hope of offering a better understanding of Zheng’s Yi philosophy.