The paper aims to explore the interaction between the public sector and private sector through the application of Game-Theoretic Model, taking the ticketing system integration of Taipei Public Transportation as a case for analysis. Furthermore, the paper will make a brief introduction through introducing ticketing system integration to the public transportation system among Hong Kong, USA and Japan. We anticipate to provide a comparatively preliminary understanding on the similarities and differences between Taiwan and them with this introduction. Finally, with the approach of interview, we explore and understand the similarities and the differences on their recognition on the various perspectives on the ticketing system integration from the public sector and private sector of Taipei Public Transportation, on which the paper conducts an effective analysis to assist in the completion of the paper.