Mou Tsung-san's interpretation of Chinese philosophy is characterized by the influence of Western philosophy, especially that of Kant. In Mou's interpretation he uses not only Kant�s philosophical terms, such as "thing in itself," "intellectual intuition," and "autonomy," but also his philosophical framework of "appearance" and "thing in itself." Mou even views this framework as the common model for all philosophical thinkings. His interpretation of Chinese philosophy has been reproached for distorting Kant's "original" philosophy; on the other hand, he has been criticized for reading too much Kant into Chinese philosophy. In this paper, I first defend Mou's philosophical interpretation against the methodological criticism which appeals to Quine's "conceptual relativism." Then I reconstruct Mou's hermeneutical principles according to his method of philosophical interpretation, I try to give a justification for his approach.