This paper introduces the synonymous relationship between Hermeneutik and interpretation from the perspective of the history of Western concepts. The essential differences between classical hermeneutics and contemporary hermeneutics are briefly pointed out with reference to the two meanings of interpretation in Western modernism,namely,Erklrung( explanation) and Auslegung( explication). Taken by Dilthey,Heidegger and Gadamer as the key concept of philosophical Hermeneutik,Auslegung further serves to reveal the essence and functional meaning of contemporary philosophical hermeneutics.