This study focuses on understanding the design characteristics of interior styles reflected in contemporary residential spaces by choosing and analyzing some design cases, reflecting interior styles of various countries, which is broadcasted through an interior design cable television in the U.S. Moreover, this study is meaningful because it provides a chance to extend the scope of study to the improving and developing Korean interior style for clarifying Korean identity to make Korean image by the comparison with other cultural spheres. In this study, after sorting 10 interior- style types and 90 design cases from the 12 cable television that mainly manage interior design projects, I grasp interior-design characteristics of each cases classified by form/expression and material. Research objects of the form/expression part for the interior-design characteristics are limited to furniture, textile, and ornaments, and those of material part are limited to furniture and ornaments.