The purpose of this study was to investigate competitive structure between the department store and the discount store based on consumers` purchase intention. Female consumers who purchased clothing both in the department store and the discount store participated in the study by completing questionnaires (N=533). Data were analyzed using factor analyses, paired t-test, Cronbach`s α, and chi-square analyses. The result was as following: 1. Overall, the department store and the discount store competing complementarily. However, this competitive structure varied with clothing items and consumers` age. 2. As a result of factor analyses, the two retailer`s service quality could be evaluated with four dimensions: price and A/S, store atmosphere and VMD, store policy, and salesperson. 3. The department store was expected to provide the highest level of service in `price and A/S`, `store atmosphere and VMD`, `salesperson` whereas the discount store in `sore policy` 4. Respondents were classified in four groups according to how frequently they use department store and discount store as following: shopper of both retailers (68.35％), discount store shopper(20.97％), department store shopper(4.70％), shopper of neither retailer(3.97％). Each group showed differences in service satisfaction and demographic characteristics.