This study tried to identify waiting time of numerous domestic and overseas visitors to Yeosu EXPO to enter various exhibits and events. Accordingly, the implications of this study can be summarized as follows. First, it was identified there was relationship between waiting time and emotional responses in Yeosu EXPO. It was found that they were willing to accept long waiting time in Yeosu EXPO and accordingly they tried to reduce resistance against waiting time watching various events and neighboring landscapes while they were waiting. Second, it was found that emotional responses of visitors made positive effects on holding city image. In Yeosu EXPO, visitors could be happy and enthusiastic while they were watching 400 programs and more than 8,000 times of cultural performances and events all over around. It was found that they had good holding city image when they had higher positive emotional responses such as joy and satisfaction for EXPO environments and felt that various programs of EXPO excellent. Third, it was confirmed that there was correlation between city image and national image. When visitors to Yeosu EXPO had positive image on holding city, they had positive image on the corresponding nation. It was hoped that Yeosu EXPO could be an ignition for Korea and Yeosu city through holding Yeosu EXPO.