This study aims to analyze Korean particles usage and errors of native Japanese intermediate and advanced learners, and to suggest effective reference data of errors of them that is of help to prevent these errors. This paper is divided five chapters. Chapter one introduces the present condition of an absence of research on analyzing errors in spoken language in Korean language education, and also mentions a purpose of this study. Chapter two examines a general tendency to advanced studies on error analysis, and chapter three explains the subject and the method of this study. Chapter four shows aspects of Korean particles usage and errors by between Japanese intermediate and advanced learners. Chapter five argues the conclusion and limitations of this study. The main point of research result is as follows. Particles errors that are mainly occurred in Korean spoken language by Japanese learners, are ‘이/가’, ‘을/를’, ‘(으)로’, ‘에게’, ‘한테’, ‘에’, ‘에서’, ‘(이)나’, ‘은/는’ and ‘도. Each error rate of ‘이/가’, ‘을/를’, ‘(으)로’, ‘에게’, ‘한테’ and ‘(이)나’ is decreased by going up the learning level. On the other hand, each error rate of ‘에’, ‘에서’, ‘은/는’ and ‘도’ remain as it is, or increased by going up the learning level. However, this study left much to be desired that there was no statistically significant difference in the result. (Namseoul University)