This paper aims to describe a case study of parametric interior design based on BIM (Building Information Modeling). As the practical use of BIM-based design grows, its influence expands into the field of interior architecture design. BIM makes possible to check various design plan, reach decision making in an effective way, and change design plan in an efficient method. Therefore, BIM is also promising field in interior architecture design. However, compared to other fields such as architecture, engineering, and construction (AEC) industry, there have been less research and projects on BIM in the field of interior architecture design. For increasing the feasibility of adapting BIM in interior architecture design, this paper describes a case study-projecting images for designing interior panels using parametric modeling. This process needs elaborate, delicate, and precise steps for harmonious output. For steady using of the building, users look forward to the design plan which can be variable and changeable according to user?s preference and the environment. Therefore, demand for parametric design in the interior design part such as panel pattern design for various decoration is growing. The process in this paper deals with an advanced phase which is effective in decreasing time consumption and useless part of the traditional process. Finally, this paper suggests the possibility of using BIM in the interior design process and field where BIM can be applied.