The Main Hall of Daedunsa Temple in Gumi stands behind a high stone embankment that was built to make up for the low terrain, with a granite stairway built into in its middle part. The foundation of the building consists of rectangular stones and round columns set up on natural foundation stones. The Main Hall measures 3 kan* by 3 kan, and has a hipped-and-gable roof with brackets to support the eaves, a characteristic architectural feature of the Joseon Period. The four corners of its roof are supported by octagonal columns. The bracket system supporting the roof looks rigid and displays the typical decorative features of buildings of the seventeenth and eighteenth centuries. The building also features a coffered ceiling, an exquisitely carved baldachin, and dancheong (a traditional form of decorative painting used on wooden buildings) patterns, which are assumed to have been made when it was first built.