This paper analyzes discourse on Asian nationalism developed in the 1950s. To explore the progress and transformation of discussion, I pay attention to Sasanggye which is very significant journal in understanding South Korea's political position on Asian nationalism and Non-Alignment. It needs to take interrelated two agendas for detailed investigation into actual development and structure of discussion. First, the problem of how Southeast Asian region was regarded and what kind of meaning it had in South Korea at that time. To deal with this question, I examined especially the phenomenon in which Southeast Asia began to be discovered and constructed as objectives of 'knowledge' at the atmosphere of the cold war. The net of knowledges organized in the 1950s can be called 'quasi area studies'. Secondly, this paper looks into the South Korea's consciousness toward main agents took the lead in non-aligned movement in Southeast Asian region. South Korea assumed ambiguous attitude toward them and through this fact we observe that strong anti-communism and needs for modernization work together. In addition I analyzed the change concerning agenda of non-alignment, which appeared in 1960 with the collapse of Rhee Syngman regime. At this period, national reunification and diplomacy were newly taken as important issues. Such situation brought about some transformation of approach to non-alignment or neutralism. Neutralization became 'our' problem awaiting serious and prudent consideration. However, a lot of intellectuals of South Korea maintained negative and critical perspectives on the possibility of neutalization. Fundamentally, somewhat changed position and trial were not beyond anticommunistic horizon.