Min, Hyun-sik. 2002. A Study on the Methods of Actual Survey in Korean Language Use. The Sociolinguistic Journal of Korea, 10(1). For the ideal language policy the administrative part of language policy should survey the actual language use of people regularly. The official survey of language use supports the scientific and objective language policy, but private survey is easy to be subjective and unfair judgement. The aim of this paper is to study the methods of actual survey in Korean language use.To make the good policy for the development of language use ability of people and to maintain the scientific description of actual language we should ensure the actual data of language use regularly, which are executed by official authorities.We proposed six domains for this survey: (1) the consciousness of language (mother tongue and foreign languages), (2) the ability of language use, (3) the features of language, (4) the language behaviour, (5) the environment of language, (6) the language policy. We can make use of the theoretical, sociolinguistic, stylistic, statistical, contrastive, comparative, language- educational, corpus linguistic methods and so on. By these surveys we can propose good language policies, develop Korean language as the major and important international language.