The purpose of this study is to find out an efficient way to utilize clothes. It will be proenvironmental effort besides enhancing clothing life. The study is based on a survey of daily clothing practices. Questionnaire is distributed to female college students who are majoring clothing, textiles, and/or home economics and their parents (n=254). ANOVA, Scheffe test, t-test and regression are pursued respectively. The main results are as follows: 1. Students, mothers and fathers possess 50.3, 49.9, 45.4 unit clothes, respectively. Mothers possess more formal suits while students possess more casual clothes than the others. The possession pattern is affected by socio-economic variables such as income and purchasing price. 2. In the unused rate of clothes, students` (10.2%) and mothers` (9.7%) rate are significantly higher than that of fathers (6.9%). The unused rate and using efficiency of clothes are affected by socio-economic variables: income and age for unused rate; age and purchasing price for using efficiency. 3. The most important reason for unused clothes is found to be design and color of the clothes. Long years of possessing and change of fashion are the next important reasons. 4. Most of respondents are highly conscious of recycling their clothes. Most of them are willing to donate their clothes to others, re-use or exchange them with the others.