《易纬·乾凿度》是汉代一部非常重要的易学和哲学著作 ,其用象数方式编织的天道观 ,不仅包含了阴阳卦气思想 ,同时还继承了老子和《中庸》的本体论思想以及儒家的价值理想 ,是我们研究汉代哲学思想不可或缺的资料。《乾凿度》提出的“易者 ,易也 ,变易也 ,不易也”勾画出了一幅理想的宇宙社会图景 ,其中既有高妙的本体论思想 ,又有对社会秩序的思考。《乾凿度》还借助道家思想和孟京以来的卦气说 ,建构了一套完整的宇宙生成模式。尽管这种生成模式不甚深刻 ,也有一定缺陷 ,但却体现出很强的时代特色。同时 ,在这个宇宙生成模式背后包含着作者深切的人文精神和深沉的忧患意识 ,体现了汉代易学“天人之学”的精神实质 Yi Wei Chuan Ching Deg is a very important Yi-ology and philosophical works in the Han Dynasty. Its idol view weaved by the method of elephant figures contains not only the Yin-Yang Gua-qi idea but also the ontology of Lao-tzu and the Doctrine of the Mean Thought and Confucian value ideal are the indispensable materials for us to study the philosophical thought of Han Dynasty. The “easy man, easy-going, easy-going, easy-to-do” outline of an ideal cosmopolitan society proposed by the “dry chisel degree” shows both the subtle ontological thinking and the social order. “Drill chisel degree” also with the help of Taoism and Meng Jing since the hexagrams say that the construction of a complete set of cosmic patterns. Although this mode of production is not very profound, but also some shortcomings, but it reflects the strong characteristics of the times. At the same time, it contains the author’s profound humanistic spirit and deep sense of hardship behind this pattern of cosmic generation, which reflects the essence of “learning of nature and human being”