The purpose of this study was to examine the relationship between percent body fat, and physical factors as well as health-related fitness factors in college females. 527 college females(age(yrs) = 20.4 ± 2.3, height(cm) = 161.3 ± 4.97, weight(kg) = 55.0 ± 7.4, Body Mass Index(BMI, kg/㎡) = 21.3 ± 3.1) who were randomly selected participated in this study, and percent body fat, height, weight, Body Mass Index(BMI), and total body water by Bioelectrical Impedance Analysis (TANITA TBF-202) were utilized to measure. Back strength was measured by means of back strength equipment(TAKEI, T.K.K. 5103, JAPAN). Sit-ups was measured for 1 minute. Trunk flextion was measured by means of trunk flexion equipment(TAKEI, T.K.K. 5103, JAPAN). Physical Efficiency Index(PEI) was also measured by using Harvard Step-Test. Analysis of Multiple Correlation and Analysis of Multiple Lieaner Regression were used. In conclusion, this result demonstrate that percent body fat was significant related with BMI, weight, height, and total body water in college females(P＜0.05).