The purposes of this study were to investigate visitors' environmental attitudes of educational tourism, environmental preservation, and regional economic benefits satisfaction through the Chunsuman Bay Birdwatching Festival. The results of this study were as follows: First, the degree of educational satisfaction was high and this festival provided environmental preservation mind for visitors and local residents as well. The festival participants had a positive attitude toward migratory birds. Especially, the residents who had negative perceptions toward migratory birds due to physical harms of agricultural crops was positively changed after visiting this festival. So there should be prepared for more strategic approaches for residents' visiting and participating this birdwatching festival. Second, while the number of tourists was increased, it did not make a practical contribution to residents' income Particularly, farmers' satisfaction was low. So there should be more strategic programs to improve residents' economic rewards for sustainable development.