This study examines whether or not the national technical qualification provides value to the examinee despite the environmental change through the KANO's dual questionnaire method for applicants who apply for the national technical qualification. So, We analyze the three functions of qualification and the incentive function, which is the characteristic of customer value, and evaluate what is the shortest part of the value of the qualification that the current customer feels and present the improvement plan. In general, the survey method has structural analysis and probabilistic analysis on the process and the result, but it does not exclude the convenience of the questionnaire itself. This study aims to demonstrate the difference between the results of the survey and the results of general surveys based on the potential weight of the subjects. Eventually, Many examinee speak to the national technical qualification non-value but Why they takes the national technical qualification? How change the Methods or theory of the national Qualification?. We would find to way for an accurate method and direction for the development of national qualification