Korean auxiliary adjectives. causatives and passives are often used in Korean sentences in spite of the small numver of them. However, the incorrect processing of their concepts leads to the poor translation quality. To solve the problems. this paper proposes a description of them based on Conceptual Graph(CG). For the description of them within CG, this paper first collects 12 auxiliary adjectives, 425 causatives, and 260 passives. Next. the paper performs the analysis of them. Then the paper depicts the meanings of them based on CG, in the experiment, the paper implements the hepler program that translates sentences included in them into CG and explains the experimental results.