The purpose of this study tried to reveal how Interactional Qualities of deluxe hotels located in Seoul affects corporate trust and Relationship continuity. In addition, it tries to find out the mediating effect that the trust among coworkers have contributed to Interactional Quality and Relationship continuities. The result of this study shows that Interactional Quality have a great effect on the trust among hotel restaurants and Relationship continuities. And it has been found that the trust between the customer and employees is a mediating effect between Interactional Quality and Relationship continuities. These results could be helped in understanding consumer`s behavioral intention in connection with the relationship marketing and working out useful marketing strategies by restaurant managers in the hotel industry.