Abstract:MOU Zong-san borrows the concept of "intellectual intuition" from Kant as the core concept of his own philosophy and makes some alterations to it. For Kant, "intellectual intuition" is a passive concept because he rejects that human being is able to have intellectual intuition. However, it is active in MOU's philosophy because his whole system of ethical metaphysics is based on that human being is able to own intellectual intuition. Kant discusses intellectual intuition in terms of traditional epistemology, while MOU Zongsan discusses it in terms of the traditional Chinese theory of "jing-jie" . To MOU, the presentation of intellectual intuition does not mean one can cognize a transcendent substance through his cognitive ability; instead, it means one can achieve a transcendent jing-jie through practice. This jing-jie is not merely a moral concept, but a perfect state in terms of morality, aesthetics and religion.