This study aims to effectively classify modern and subdivided Buddhism-related topics in the 6th ed. of the KDC and to improve classification tables that can improve user accessibility. The theoretical background of the study is that there is a practical logic that requires adjustment to the standard of refreshments in the amount of literature based on literary warrant, and the recent trend of publishing Buddhist-related materials is expanding to practical and convergent topics such as meditation and psychotherapy. However, KDC6 saw structural limitations in accepting these changes. Accordingly, the classification assignment ratio was examined by applying the publishing trend and literary warrant of Buddhist-related topics over the past five years in Korea. In addition, classification tables on Buddhism-related topics were compared and analyzed in KDC6, CLC5, and NDC10. Based on the analysis results, a classification table improvement (draft) that reinforces academic system and modern practicality was presented. To summarize the contents of the improvement (draft), first, it established the logical flow of ‘Buddhism￫Buddhist scriptures ￫history/people￫sect/organization￫performance(practice)￫culture/art￫society’. Second, by accepting the characteristics of CLC5 and NDC10, the Buddhist scriptures were subdivided into three-part systems of Scriptures, Precepts, and Doctrinal writings. Third, by modernizing performance (practice), new themes such as ‘meditation’ and ‘psychology’ were placed, and distributed items of similar topics were integrated. Fourth, the sect was organized according to ideological and historical trends, and Lamaism was integrated to secure logic.