The purpose of this study was to investigate dietary behaviors, exercise habit and free radical level of College Women in Gyeong-gi provins. The number of the subjects was 55 and the results of this study are as follows: The average height, weight and BMI of nonsmoking group, 3yrs under smoking group and 3yrs over smoking groups were 161.7±3.7 ㎝, 52.1±8.7 ㎏, 19.9±3.3 ㎏/㎡ and 161.5±3.7 ㎝, 51.1±5.5 ㎏, 19.5㎏1.9 ㎏/㎡ and 162.1±3.6 ㎝, 52.1±9.8 ㎏, 19.6±3.5 ㎏/㎡, respectively. The meal regularity was 84.8%, 81.2%, 100.0% for ‘irregular’ and frequency of breakfast was 24.2%, 12.5%, 66.6% for ‘everyday’, respectively. The eating time was 16.4%, 12.7%, 7.3% for ‘1O-20min’ (P<.05). The night-time eating was 57.5%, 43.7%, 33.3% for ‘sometimes’ (P<.05), and the type of food for night-time eating was the highest 48.4% for ‘cookies’ and 18.1% for ‘noodles’(p<.01). The overeating was 60.6%, 43.7%, 83.3% for ‘2-3times/week’. The reason of overeating was 45.4% for ‘delicious’ and 20.0% for ‘hungry’. The frequency of exercise was 65.5% for ‘no’, and exercise time was 49.1% for ‘30 min<’. The free radical average of the subjects were 203.97±45.50, 271.94±38.34, 318.67±135.35(P<.000), but ‘<160’ was showed nonsmoking group and ‘340<’ was showed 3yrs over smoking group(p<.001). The free radical and dietary behaviors except smoking had not significant correlations. In conclusion, dietary behaviors and exercise habits of college students may be a bad habit from the viewpoint of meal regularity, breakfast, eating time, night-time eating, snack, overeating, frequency of exercise and free radical level. The results of this study suggest that various education programs for smoking students is needed to improve their dietary behaviors and to maintain normal free radical level and their health.