Abstract: In the process of modernization of Confucianism,Cheng-Zhu Confucianism began to pay attention to epistemology.However,In Cheng-Zhus metaphysical epistemology,due to the isomorphism of “Human mind” “Physics” “Natural principle”,knowledge is not given an independent value.Along with the modernization of Confucianism,in Dai Zhens epistemology,the cognitive subjects ability will be improved and expanded from “Soul” to “God”,and the cognitive object is embodied in the objective physics in the form of “rules”,“division” and “organization”.There is an epistemological relationship between subject and object.Through the accurate examination of the cognitive object,the cognitive subject will finally obtain the cognitive results of “reason and meaning”.Dai Zhens construction of epistemology provides a case paradigm for the modernization of Confucianism,which is still of great significance in our times.

Key words: modernization of Confucianism, epistemology, Dai Zhen