The survey was conducted from June 18 to June 20 2008 and from Sept. 1 to Sept. 3, 2008, respectively, to investigate the insect diversity of Dadohae Marine National Park, Jeonnam province. In this study, 144 species of 47 families in 9 orders were identified. Among them, 62 species of 1 family were added newly through this survey, and therefore, the fauna of the Dadohae Marine National Park, making it 947 species of 176 families in 15 orders.