The theory of I-Ching implied the concept of cosmogony. Shao Jung developed a cosmogonic theory ,Yuan-hui-yun-shih ,which is based on I-Ching and 4 a priori I-diagrams. The contents of the essay inclue : the time concept of I-Ching、4 a priori I-diagrams、the time theory on Yuan-hui-yun-shih and the other philosophers` critique.