Abstract
The existing problems of non-standard CAD interior design drawing and poor output quality are impeding the expression and transmission of interior design concept. In a time of digital media technology and visualization designers should give visual expression the importance it deserves when conducting their design. The visual expression of CAD interior drawing contains two levels of things, the standardization and visualization of drawings. To obtain a good visualization effect in design, a designer needs to improve his professional quality and develop a good drawing habit. With the drawing and editing functions of CAD software, a designer should conduct his design around the concept of visualization and thus to enhance the speciality, expressiveness and competitiveness of the design.