This article is constituted of four sections: first, the lessons we learn from the PBL teaching method; second, to review the courses of philosophy in the spirit to return to philosophical inquiry; third, applying the course design of the PBL teaching method to the course of ”Western Aesthetics and its Criticisms;” and fourth, review and improvement. The first section roughly introduces the origins of the PBL teaching method, its executive effects within and without the country, along with its executive effects in the course of ”Introduction to Philosophy” in the Department of Philosophy. In the second section, we explicate the guidelines under which to implement the PBL teaching method and the details about how it's employed in philosophy courses. In the third section, we explain the development of the Socratic Method as the framework of the discussion over how professional philosophy courses deal with the issue of PBL teaching, in wishes to make the Socratic Method the characteristic of the advocacy of the PBL teaching method in philosophy courses. Moreover, there is an introduction to the application of the PBL course design to the course of ”Western Aesthetics and its Criticisms.” And the fourth section is brief evaluation of and expectation from the application of the PBL teaching method to professional philosophy courses.