This study implements an FRBR model to organize master’s and doctoral theses available in the National Central Library of Taiwan (NCL) and attempts to assess its feasibility. There are a few relationships in theses. So we select thesis as our object. We employ the FRBR model to analyze entities and relationships for those theses, design an algorithm, and set up a system for trial runs. On the side, we try to find other relation relationship for those theses. Finally, the full FRBR model of thesis is built. The study shows by its results that the FRBR model in our case is better than traditional cataloguing and indexing methods. And then, the study builds the FRBR model for the theses. It provides the user with better and faster services in accessing the theses collection in the National Central Library of Taiwan.