The Jeongnimsa Temple Site is where a major temple, Jeongnimsa Temple, stood in the capital movement period from 538 to 660. When the excavation was performed, the writing “8th year of Taepyeong, Mujin Jeongnimsa Temple Daejangdangcho” was discovered on the piece of tile from the site of the auditorium, suggesting that it was Jeongnim Temple in Goryeo Dynasty. The 8th year of Taepyeong corresponds to the year 1028, the 19th year of the reign of King Hyeonjong in Goryeo. In particular, it explains that a building was rebuilt on the site of the auditorium of Baekje Dynasty in Goryeo and was assumed to have been named Daejangjeon Hall. Jeongnimsa Temple has a central line, with Jungmun (central gate), five-story stone pagoda, Geumdang Hall, and auditorium arranged in a straight line from north to south. The garam-style arrangement is made on the plane surrounding Daejangjeon Hall with corridor. These kinds of garam arrangement had an influence on the garam style of the Japanese temple in the 7th century, forming the fundamentals of the garam arrangement of Japanese temple in the ancient times. Still, a special feature of the garam arrangement is that the shape of the corridor surrounding a center of garam arrangement is similar to a trapezoid whose northern gap is wide rather than a square. The pond in front of the temple unearthed by the excavation investigation has been improved, and a hall for the protection of stone seated Buddha was newly constructed in 1933. The Five-story Stone Pagoda (National Treasure No. 9) made in the age of Baekje and the Stone Seated Buddha (Treasure No. 108) made during the Goryeo period remain. The excavated relics include various temple items such as decorative tiles of Baekje and Goryeo, inkstone, earthenware, soil Buddha statue, etc. This indicates the cultural state at that time and serves as representative remains in the age of Baekje.