The purpose of this study is to find out the factors affecting the dietary quality of adolescence through a random sampling of 798 girls, from 13 to 19 years of age in Chung-Nam province area. This survey was conducted from Febril 6 to 16, 1985. The results can be summarized as follows 1) The mean dietary score of nutrient adequacy of subjects was 11.93 out of possible 17, which showed that all nutrients intake might be lower than the R.D.A 2) The mean age of subjects was higher in the poorer dietary groups(P<0.01). 3) In the better dietary groups, the subjects were more satisfied with their present body shape, and the ratio of over weight was lower(P<0.01). 4) In the better dietary groups, the ratio of meals missed and meals performed irregularly was lower(P<0.01). 5) The preference of protein-food group was higher in the better dietary groups(P<0.01). 6) In the better dietary groups, the frequency of snacks and instant foods was higher(P<0.01).