The purpose of this study is to provide consumers with practical information for reasonable purchasing by analyzing apparel purchasing behavior. information source use, demographic differences in terms of life style patterns, moreover, to support apparel manufacturers in producing goods and making a plan by developing more effective advertisements and efficient marketing strategy, such as media strategy. This study targeted 832 men and women wearing sports casual wear. Information source is used to analyze the data and MANOVA, ANOVA. Scheffe is employed for post-inspection and demographic bases are based on the frequency of each type. The followings are the conclusions of this study : 1. In case of print media, TV, PC factor, fashion advocates and individuality advocates most frequently used information source. In case of purchasing experience factor, individuality advocates skewed higher frequency than conformity type. and then, in case of observation information use factor, individuality advocates were ranked as the highest and conformity type as the lowest. In case of human information use factor, fashion advocates and individuality advocates showed higher frequency than practical type and conformity type. 2 In case of female, Individuality advocates was ranked as the highest. In case of male, practical type and conformity type were rank as the highest. Fashion advocates ranked as the lowest in any case. 3. Individuality advocates were ranked as the highest among people aged 14 to 16, practical type among 17 to 19, conformity type among 20 to 23, conformity type among over 20. 4. Middle school students tended to be the individuality advocates, high school students the practical type, university students the practical type and the conformity type, and company workers conformity type.