The purpose of this study was to investigate the effect of body composition, funtional performance ability, talar tilt angle, and foot injuries rate of high school traditional Korean dance majors with the functional ankle instability(FAI). Sixteen dancers were divided into two groups depending on the CAIT results; FAI group(n=8) and normal group(n=8). The data processing was performed with independent t-test and frequency analysis in use of SPSS 20.0(SPSS Inc, Chicago, Illinois) statistical program. The statistical significance was accepted at .05 levels. As a result, the inversion angle of the left ankle and the eversion angle of the right ankle were significant difference between FAI group and normal group (p<.05). The talar tilt angle of the right ankle was significant difference between FAI group and normal group(p<.01) and the talar tilt angle of the left ankle was significant difference between FAI group and normal group (p<.05). The injury experience and recurrent rate were higher in FAI group than normal group in the physical injury frequency analysis. Accordingly, it is necessary to recommend damage prevention in advance by checking the ankle joints and physical condition through regular physical activity checking and medical examining in every 6 months or one year at least.