在中国古代思想文化和学术发展史上,西汉后期的刘向、刘歆父子占有重要地位。具体到易学领域,他们也提出过许多颇有价值的思想理论,做出过较大贡献。然而长期以来,人们似乎习惯于从文献学、经学、史学和文学的角度去关注刘氏父子,而对他们的易学成就却少有涉及,更谈不上什么系统研究。这不利于全面了解和认识刘氏父子,也不利于中国易学史研究的深化和拓展。有鉴于此,本文拟对刘向、刘歆父子的易学思想作一初步探讨。不妥之处, In the history of Chinese ancient ideology and culture and academic development, Liu Xiang and Liu Xin took the important position in the late Western Han Dynasty. Specific to the field of learning, they also put forward many valuable theory of thought, made a greater contribution. However, for a long time, people seem to be accustomed to pay attention to Liu’s father and son from the perspectives of literature, classics, history and literature, but they rarely involve the achievements of Yi-ology, let alone systematic research. This is not conducive to a comprehensive understanding and understanding of Liu’s father and son, nor is it conducive to the deepening and expansion of the study of the history of the Yi-ology in China. In view of this, this article intends to make a tentative discussion on the Yi-ology thought of Liu Xiang and Liu Xin’s father and son. Inappropriate place,