Expo is now firmly established as one of the top three world event, with Olympic and World Cup, which can be achieved a centralized investment of various contents in economy, technology, and culture and so on. Local government, in South Korea, actively has worked to hold Expo to revitalize the local economy and to increase the local identity since Daejeon World Expo in 1993. However, it is a fact that is hard to find Expo making good professional identity design system of Expo for lack of adequate understanding of the local community and government about design system. Accordingly, this study will suggest the promotion Expo along with the importance of character development, and the present status and analysis of Expo character which is essential to identity establishment of Expo and the core of the communication.