The Convention industry is a synthetic service industry which has not only the information effect of making the tourist resources and cultures of the venues known all though the world but also for reaching economic and social effects. These days, Exhibition and Convention Services are a popular medium for promoting products and services. However, much of the existing literature on ECSs(Exhibition and Convention Services). Despite, this preoccupation, surprisingly little research has been used to examine the ECSs` essential characteristic in marketing. In the ECSs` essential characteristic, many researches have not handled the process that ECSs` subjects(organizer, exhibitor, visitor) is experiencing. This study is designed to examine how ECSs` subject, specially exhibitors and visitors, evaluate the quality of the physical evidences and motivation, how the evaluation of the perceived characteristic influences the perceived experience, the overall satisfaction, loyalty, and performance. The major purposes of this study with this proposition are as follows: