The purpose of this study is to explore the factors that influence consumer using OK Mini vending machine and the importance and priory of them, using a hierarchical analysis method to establish a hierarchical structure. The teachers, students and administrators who have used the OK Mini vending machine in Chung Hua University are interviewed to understand their prioritization when using OK Mini, and then put forward research conclusions and recommendations. According to the results of the study, the interviewees gave priority to "convenience and time saving", and the others were "retail innovation", "use incentives" and "ease of use". This result can be used for reference by OK Mini operators, product suppliers, competent agencies and consumers.