Korean Costume has long history and functional aesthetic value compared with the traditional costume of other contries. But nowadays korean Costume is becoming more and more distant from the people in the world wide current. To domiciliate and spread out the Practical Korean Costume which the goverment selected as CI symbol representing Korean culture in the trend of times. We investigated and analysed systemically the consciousness of customers and the details of design. This study consist of theoritical study and positive study. Theoritical study has the esthetic characteristic(structure characteristics formative characteristic and the characteristic of color) As the conciousness of people change in modern life which everything change in high speed the esthetic characteristics of Korean Costume have changed in structure.