Interior Design is as much an act of mind, which is both sensuous and sensible, as a professional skill, combining technology and art. While the design being the main action of designing, the symbols, on the other hand, are the essential operation in Graphics. This research focuses on the Interior Design Symbols, currently being used in A1042, the architectural graphics applying the national standardized CNS811567. Theoretically based on the literature reviews of symbol, as well as the symbols used in the plane figures (15 plane figures altogether) of rither the architectual agency or the presale condominiums. This research uses the Content Analysis Method to set up the common Interior Design Symbols either as future tesching materials so students may easily cultivate a competence for graphics reading as well as an ability to apply in daily lives, or as a simplified reference of symbols for graphic illiterate people in house-purchasing.