The study investigated the characteristic and common motions of traditional Korean folk dances. When the Jinju Jummu, the Seungzeonmu, the Seungmu and the Taepyeongmu are performed by standard rhythm, the change of the positions of the each part of the dancers body were analyzed by image analyzing method using a video tape recoder. The obtained results were as follows : 1) The common motions of traditional Korean folk dances include lots of soft slow elastic bending and stretching motions in the knees. While bending the upper body during, a vanity of dancing motions are performed. There are many motions where the arms are stretched horizontally and vertically. There are no running jumps, but there are some short hops performed on one leg. During the dance there is no time where the foot is raised above the knee. 2) The mean values of the positions of the head during the dances were not statistically significance. There is a gradual bending of the knees in the dances. The Taeopyeongmu has the most bending followed by the Seungzeonmu, the Seungmu and the Jinju Kummu respectively. The mean values of the positions of the navel have a significant difference in each of the dances. The motions of sitting or lying flat are many. The Seungmu has greatest number of sitting and lying position followed by the Taepyeongmu, the Seungzeonmu and the Jinju Kummu respectively. The mean values of the positions of the right elbow during the dances is significant in each of the dances and the Seungmu has the largest width moving up and down, the next is in the Jinju Kummu, the Taepyeongmu and finally the Seungzeonmu. The mean values of the positions of the Seungzeonmu. The mean values of the positions of the right knee during the dabces were significant in each of the dances and the position of the knee is highest in the Jinju Kummu, the Taepyeongmu, the Seungzeonmu and the seungmu respectively.