Abstract For years, due to the lack of sound public transportation system, Kaohsiung citizens depend on motor cycles and their own cars for transportation. In the early this year, they started to have a new choice with the completion of Kaohsiung Mass Rapid Transit system (KMRT). Will the KMRT bring them more convenience and make them give up the dependence on motor cycles or cars, which eventually will become an important factor in choosing housing just as what has been observed in Taipei over the past decade? The research aims to study the influence of the KMRT to Kaohsiung people¡¦s daily habit of transportation and their housing choices. The study has adopted the planned behavior theory to explore the behavior intentions of Kaohsiung citizens in housing choices and to analyze the factors for purchases. The research adopted the questionnaire survey procedure to those people who were 25 years old and had taken the KMRT. The grand total of the questionnaires is 450 ones, of which 409 ones were effective. From the result through the regression analysis, it has been found that the location of the KMRT has indeed become a factor in housing choice for those who have taken the KMRT. However, it should be pointed out that an average of only ten percent Kaohsiung citizens per day use the system while in Taipei, above one third of people use the MRT every day. The low percentage for Kaohsiung people in using the new system tells the fact that the new system has not affected the people¡¦s lives so much as Taipei¡¦s MRT.