Recently, Chinese tourists are more and more interesting in individualtourism. The proportion of individual tourists making Advance preparation viawebsite or SNS ect is relatively high. Investigating in the determination oftourism decision-making process, especially on individual field, a few ofresearch can be found. So in this paper, we would like to use demographicanalysis method to investigate those attractive factors in tourismdecision-making process, such as: the degree of network service applications,the impact of network services, the situation of the jeju tourism informationproduction and distribution. Theoretical investigating internet service, thereare three types of internet service functions: tourism portal, SNS and blog.Following demographic analysis method, the hypothesis of differences orsimilarities may exist between those three functions will be easily derived. Byusing the questionnaire data to make spss analysis, we tested each of those factors which probably have an influence on tourism decision-making. Byanalyzing data, we found that the three functions all influence the tourismdecision-making process by their own way, which is more or less.