This article suggests the history, research guide, and record management system of the UN archive, and introduces specific sources that can be used for the study of Cold War and Peace History of the Korean Peninsula. Since 1945, the Korean Peninsula has had close relations with the United Nations in many aspects, but there has been insufficient historical research on this. This is related to the issue of data access, as researchers are not fully aware of the data situation in the United Nations archive, which holds diverse array of records from the United Nations. Although the National Archives of Korea(NAK) collected some of the records related to Korea from the UN archive, it is not easy for researchers to use it due to confusion in the record classification system. This paper aims to summarize the structure of Korean-related records in the UN archive and the overall situation of the UN records in NAK, and to explore the possibility of using some of them for future Cold War and peace history study.