Gait analysis techniques are widely used in Europe and the United States to investigate the loosening problems of total joint implantation and to improve the technologies in designing prosthetic devices. In Korea, however, the gait data are rarely found. Recently, as the standards of living become improved, the number of lower extremity operation patients increase rapidly. Therefore, a study on the gait characteristic parameters for Koreans is of great importance. In this study, time-distance gait parameters and ground reaction fore are analyzed using a FOANAS system developed by Pohang Institute of Science and technology (POSTECH). Gait parameters of Korean normal adults were preceded and comparisons were made for the distinction of sex and age.