The National Archives of Korea (NAK) has developed and is currently operating "Audio-visual Archiving System" to ensure easy accessibility of users to the records through digital conversion of analogue type audiovisual records and more systematic management of records using a system. This paper covers the whole process of the system development and the actual operation of the system by describing the actual cases of records management such as building DB through digital conversion of audio-visual records, and user's search and utilization. Specifically, this paper contains the background of the development of the audiovisual records management system, the process of development, the whole process of the system, introduction of major management functions, introduction of automation functions for efficient work processing, linkage with existing systems and migration. It is hoped that it will be used as a case study in the course of introduction and operation of audiovisual record management system in the future by presenting effect analysis obtained by operating the audiovisual records management system and suggesting constructive directions for management and utilization of audiovisual records.