This study is focused on the methodological approach of measuring ‘importance’ by applying AHP and Conjoint Analysis. The purpose of this research is to evaluate merits and demerits of AHP and Conjoint Analysis methodologically. After applying each method, conjoint analysis has the merit of measuring each attribute’s ‘importance’ by evaluating combination of all attributes, and AHP has the merit of measuring ‘importance’ from small number of interviewees. The demerit of conjoint analysis is that it has difficulty in applying to multi-attribute combination and of AHP burdens the interviewee because of logical consistency.