This study conducted various surveys on Catholic Movable Cultural Heritage to understand the perception of them, and to investigate and analyze their types, characteristics, and conservation management status. It was determined that the risk of damage and loss is high due to the management status of practitioners who are non-professionals in the field of cultural heritage and the existing guidelines that are not effective. In addition, we identified the uniformity of materials and the period characteristics of the modern era, as most of the items are liturgical items made according to the norms. In consideration of this, we proposed a new classification system that lists the subcatagory’s items and materials corresponding to each item, a management card with improved nomenclature and detailed information fields, and concrete and tangible instructions to make it easier for non-professional practitioners to access. As the number of Catholic Movable Cultural Heritage is expected to increase in the future, the need for conservation and management and related research is expected to be actively conducted, and this study is expected to increase the interest in Catholic Movable Cultural Heritage and serve as a basis for further research.